diff --git a/AK/ByteBuffer.h b/AK/ByteBuffer.h
index 65ba418f4ab293..ea498d9ce899cd 100644
--- a/AK/ByteBuffer.h
+++ b/AK/ByteBuffer.h
@@ -325,12 +325,6 @@ inline NonnullRefPtr<ByteBufferImpl> ByteBufferImpl::copy(const void* data, size
     return ::adopt(*new ByteBufferImpl(data, size));
 }
 
-inline const LogStream& operator<<(const LogStream& stream, const ByteBuffer& value)
-{
-    stream.write((const char*)value.data(), value.size());
-    return stream;
-}
-
 }
 
 using AK::ByteBuffer;
diff --git a/AK/Format.cpp b/AK/Format.cpp
index 698b83972887e5..ee328d86dc6c35 100644
--- a/AK/Format.cpp
+++ b/AK/Format.cpp
@@ -28,8 +28,13 @@
 #include <AK/GenericLexer.h>
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
+#include <AK/kstdio.h>
 #include <ctype.h>
 
+#if defined(__serenity__) && !defined(KERNEL)
+#    include <serenity.h>
+#endif
+
 #ifdef KERNEL
 #    include <Kernel/Process.h>
 #    include <Kernel/Thread.h>
@@ -416,12 +421,6 @@ void vformat(StringBuilder& builder, StringView fmtstr, TypeErasedFormatParams p
 
     vformat_impl(params, fmtbuilder, parser);
 }
-void vformat(const LogStream& stream, StringView fmtstr, TypeErasedFormatParams params)
-{
-    StringBuilder builder;
-    vformat(builder, fmtstr, params);
-    stream << builder.to_string();
-}
 
 void StandardFormatter::parse(TypeErasedFormatParams& params, FormatParser& parser)
 {
diff --git a/AK/Format.h b/AK/Format.h
index c7b5400e30fe96..8da01d3b26ecba 100644
--- a/AK/Format.h
+++ b/AK/Format.h
@@ -364,7 +364,6 @@ struct Formatter<std::nullptr_t> : Formatter<FlatPtr> {
 };
 
 void vformat(StringBuilder&, StringView fmtstr, TypeErasedFormatParams);
-void vformat(const LogStream& stream, StringView fmtstr, TypeErasedFormatParams);
 
 #ifndef KERNEL
 void vout(FILE*, StringView fmtstr, TypeErasedFormatParams, bool newline = false);
diff --git a/AK/Forward.h b/AK/Forward.h
index dd4bf6dc7ffaeb..a12bca8e56ae05 100644
--- a/AK/Forward.h
+++ b/AK/Forward.h
@@ -32,12 +32,10 @@ namespace AK {
 
 class Bitmap;
 class ByteBuffer;
-class DebugLogStream;
 class IPv4Address;
 class JsonArray;
 class JsonObject;
 class JsonValue;
-class LogStream;
 class StackInfo;
 class String;
 class StringBuilder;
@@ -143,7 +141,6 @@ using AK::ByteBuffer;
 using AK::Bytes;
 using AK::CircularDuplexStream;
 using AK::CircularQueue;
-using AK::DebugLogStream;
 using AK::DoublyLinkedList;
 using AK::DuplexMemoryStream;
 using AK::FlyString;
@@ -158,7 +155,6 @@ using AK::IPv4Address;
 using AK::JsonArray;
 using AK::JsonObject;
 using AK::JsonValue;
-using AK::LogStream;
 using AK::NonnullOwnPtr;
 using AK::NonnullOwnPtrVector;
 using AK::NonnullRefPtr;
diff --git a/AK/HashTable.h b/AK/HashTable.h
index 3c5007ad6bdf6e..d0e5df44b3b091 100644
--- a/AK/HashTable.h
+++ b/AK/HashTable.h
@@ -27,7 +27,6 @@
 #pragma once
 
 #include <AK/HashFunctions.h>
-#include <AK/LogStream.h>
 #include <AK/StdLibExtras.h>
 #include <AK/Types.h>
 #include <AK/kmalloc.h>
diff --git a/AK/IDAllocator.h b/AK/IDAllocator.h
index 068aa7046ecaf0..796c35f1643e0d 100644
--- a/AK/IDAllocator.h
+++ b/AK/IDAllocator.h
@@ -26,6 +26,7 @@
 
 #pragma once
 
+#include <AK/Forward.h>
 #include <AK/HashTable.h>
 
 namespace AK {
diff --git a/AK/IPv4Address.h b/AK/IPv4Address.h
index 8f81130904fcd4..e64d8efb6b7a7e 100644
--- a/AK/IPv4Address.h
+++ b/AK/IPv4Address.h
@@ -27,7 +27,6 @@
 #pragma once
 
 #include <AK/Endian.h>
-#include <AK/LogStream.h>
 #include <AK/Optional.h>
 #include <AK/String.h>
 #include <AK/StringView.h>
@@ -143,11 +142,6 @@ struct Traits<IPv4Address> : public GenericTraits<IPv4Address> {
     static constexpr unsigned hash(const IPv4Address& address) { return int_hash(address.to_u32()); }
 };
 
-inline const LogStream& operator<<(const LogStream& stream, const IPv4Address& value)
-{
-    return stream << value.to_string();
-}
-
 template<>
 struct Formatter<IPv4Address> : Formatter<String> {
     void format(FormatBuilder& builder, IPv4Address value)
diff --git a/AK/LogStream.cpp b/AK/LogStream.cpp
index 7837050e42e32c..e69de29bb2d1d6 100644
--- a/AK/LogStream.cpp
+++ b/AK/LogStream.cpp
@@ -1,240 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <AK/FlyString.h>
-#include <AK/LogStream.h>
-#include <AK/String.h>
-#include <AK/StringBuilder.h>
-#include <AK/StringView.h>
-
-#ifdef KERNEL
-#    include <Kernel/Process.h>
-#    include <Kernel/Thread.h>
-#endif
-
-namespace AK {
-
-const LogStream& operator<<(const LogStream& stream, const String& value)
-{
-    stream.write(value.characters(), value.length());
-    return stream;
-}
-
-const LogStream& operator<<(const LogStream& stream, const FlyString& value)
-{
-    return stream << value.view();
-}
-
-const LogStream& operator<<(const LogStream& stream, const StringView& value)
-{
-    stream.write(value.characters_without_null_termination(), value.length());
-    return stream;
-}
-
-const LogStream& operator<<(const LogStream& stream, int value)
-{
-    char buffer[32];
-    snprintf(buffer, sizeof(buffer), "%d", value);
-    return stream << buffer;
-}
-
-const LogStream& operator<<(const LogStream& stream, long value)
-{
-    char buffer[32];
-    snprintf(buffer, sizeof(buffer), "%ld", value);
-    return stream << buffer;
-}
-
-const LogStream& operator<<(const LogStream& stream, long long value)
-{
-    char buffer[32];
-    snprintf(buffer, sizeof(buffer), "%lld", value);
-    return stream << buffer;
-}
-
-const LogStream& operator<<(const LogStream& stream, unsigned value)
-{
-    char buffer[32];
-    snprintf(buffer, sizeof(buffer), "%u", value);
-    return stream << buffer;
-}
-
-const LogStream& operator<<(const LogStream& stream, unsigned long long value)
-{
-    char buffer[32];
-    snprintf(buffer, sizeof(buffer), "%llu", value);
-    return stream << buffer;
-}
-
-const LogStream& operator<<(const LogStream& stream, unsigned long value)
-{
-    char buffer[32];
-    snprintf(buffer, sizeof(buffer), "%lu", value);
-    return stream << buffer;
-}
-
-const LogStream& operator<<(const LogStream& stream, const void* value)
-{
-    char buffer[32];
-    snprintf(buffer, sizeof(buffer), "%p", value);
-    return stream << buffer;
-}
-
-#if defined(__serenity__) && !defined(KERNEL)
-static TriState got_process_name = TriState::Unknown;
-static char process_name_buffer[256];
-#endif
-
-DebugLogStream dbg()
-{
-    DebugLogStream stream;
-
-    // FIXME: This logic is redundant with the stuff in Format.cpp.
-#if defined(__serenity__) && !defined(KERNEL)
-    if (got_process_name == TriState::Unknown) {
-        if (get_process_name(process_name_buffer, sizeof(process_name_buffer)) == 0)
-            got_process_name = TriState::True;
-        else
-            got_process_name = TriState::False;
-    }
-    if (got_process_name == TriState::True)
-        stream << "\033[33;1m" << process_name_buffer << '(' << getpid() << ")\033[0m: ";
-#endif
-#if defined(__serenity__) && defined(KERNEL)
-    if (Kernel::Processor::is_initialized() && Kernel::Thread::current())
-        stream << "\033[34;1m[#" << Kernel::Processor::id() << " " << *Kernel::Thread::current() << "]\033[0m: ";
-    else
-        stream << "\033[36;1m[Kernel]\033[0m: ";
-#endif
-    return stream;
-}
-
-#ifdef KERNEL
-KernelLogStream klog()
-{
-    KernelLogStream stream;
-    if (Kernel::Processor::is_initialized() && Kernel::Thread::current())
-        stream << "\033[34;1m[#" << Kernel::Processor::id() << " " << *Kernel::Thread::current() << "]\033[0m: ";
-    else
-        stream << "\033[36;1m[Kernel]\033[0m: ";
-    return stream;
-}
-#else
-DebugLogStream klog()
-{
-#    pragma GCC diagnostic push
-#    pragma GCC diagnostic ignored "-Wdeprecated-declarations"
-    return dbg();
-#    pragma GCC diagnostic pop
-}
-#endif
-
-#ifdef KERNEL
-KernelLogStream::~KernelLogStream()
-{
-    if (!empty()) {
-        char newline = '\n';
-        write(&newline, 1);
-        kernelputstr(reinterpret_cast<char*>(data()), size());
-    }
-}
-#endif
-
-DebugLogStream::~DebugLogStream()
-{
-    if (!empty() && s_enabled) {
-        char newline = '\n';
-        write(&newline, 1);
-        dbgputstr(reinterpret_cast<char*>(data()), size());
-    }
-}
-
-void DebugLogStream::set_enabled(bool enabled)
-{
-    s_enabled = enabled;
-}
-
-bool DebugLogStream::is_enabled()
-{
-    return s_enabled;
-}
-
-bool DebugLogStream::s_enabled = true;
-
-#ifndef KERNEL
-const LogStream& operator<<(const LogStream& stream, double value)
-{
-    return stream << String::format("%.4f", value);
-}
-
-const LogStream& operator<<(const LogStream& stream, float value)
-{
-    return stream << String::format("%.4f", value);
-}
-#endif
-
-void dump_bytes(ReadonlyBytes bytes)
-{
-    StringBuilder builder;
-
-    u8 buffered_byte = 0;
-    size_t nrepeat = 0;
-    const char* prefix = "";
-
-    auto flush = [&]() {
-        if (nrepeat > 0) {
-            if (nrepeat == 1)
-                builder.appendff("{}{:#02x}", prefix, static_cast<int>(buffered_byte));
-            else
-                builder.appendff("{}{} * {:#02x}", prefix, nrepeat, static_cast<int>(buffered_byte));
-
-            nrepeat = 0;
-            prefix = ", ";
-        }
-    };
-
-    builder.append("{ ");
-
-    for (auto byte : bytes) {
-        if (nrepeat > 0) {
-            if (byte != buffered_byte)
-                flush();
-
-            buffered_byte = byte;
-            nrepeat++;
-        } else {
-            buffered_byte = byte;
-            nrepeat = 1;
-        }
-    }
-    flush();
-
-    builder.append(" }");
-
-    dbgln("{}", builder.string_view());
-}
-
-}
diff --git a/AK/LogStream.h b/AK/LogStream.h
index 9d6a0900bf6e57..e69de29bb2d1d6 100644
--- a/AK/LogStream.h
+++ b/AK/LogStream.h
@@ -1,196 +0,0 @@
-/*
- * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#pragma once
-
-#include <AK/Format.h>
-#include <AK/Forward.h>
-#include <AK/Types.h>
-#include <AK/kmalloc.h>
-#include <AK/kstdio.h>
-
-#if !defined(KERNEL)
-#    include <AK/ScopedValueRollback.h>
-#    include <AK/StringView.h>
-#    include <errno.h>
-#    include <unistd.h>
-#endif
-
-namespace AK {
-
-class LogStream {
-public:
-    LogStream()
-#if !defined(KERNEL)
-        : m_errno_restorer(errno)
-#endif
-    {
-    }
-    virtual ~LogStream() = default;
-
-    virtual void write(const char*, int) const = 0;
-
-private:
-#if !defined(KERNEL)
-    ScopedValueRollback<int> m_errno_restorer;
-#endif
-};
-
-class BufferedLogStream : public LogStream {
-    mutable size_t m_size { 0 };
-    mutable size_t m_capacity { 128 };
-    union {
-        mutable u8* m_buffer { nullptr };
-        mutable u8 m_local_buffer[128];
-    } u;
-
-    void grow(size_t bytes_needed) const
-    {
-        size_t new_capacity = (m_size + bytes_needed + 0x7F) & ~0x7F;
-        u8* new_data = static_cast<u8*>(kmalloc(new_capacity));
-        if (m_capacity <= sizeof(u.m_local_buffer)) {
-            __builtin_memcpy(new_data, u.m_local_buffer, m_size);
-        } else if (u.m_buffer) {
-            __builtin_memcpy(new_data, u.m_buffer, m_size);
-            kfree(u.m_buffer);
-        }
-        u.m_buffer = new_data;
-        m_capacity = new_capacity;
-    }
-
-protected:
-    u8* data() const
-    {
-        if (m_capacity <= sizeof(u.m_local_buffer))
-            return u.m_local_buffer;
-        return u.m_buffer;
-    }
-
-    size_t size() const { return m_size; }
-
-    bool empty() const { return m_size == 0; }
-
-public:
-    BufferedLogStream() = default;
-
-    virtual ~BufferedLogStream() override
-    {
-        if (m_capacity > sizeof(u.m_local_buffer))
-            kfree(u.m_buffer);
-    }
-
-    virtual void write(const char* str, int len) const override
-    {
-        size_t new_size = m_size + len;
-        if (new_size > m_capacity)
-            grow(len);
-        __builtin_memcpy(data() + m_size, str, len);
-        m_size = new_size;
-    }
-};
-
-class DebugLogStream final : public BufferedLogStream {
-public:
-    DebugLogStream() = default;
-    virtual ~DebugLogStream() override;
-
-    // DebugLogStream only checks `enabled` and possibly generates output while the destructor runs.
-    static void set_enabled(bool);
-    static bool is_enabled();
-
-private:
-    static bool s_enabled;
-};
-
-#ifdef KERNEL
-class KernelLogStream final : public BufferedLogStream {
-public:
-    KernelLogStream() = default;
-    virtual ~KernelLogStream() override;
-};
-#endif
-
-inline const LogStream& operator<<(const LogStream& stream, const char* value)
-{
-    if (!value)
-        return stream << "(null)";
-    int length = 0;
-    const char* p = value;
-    while (*(p++))
-        ++length;
-    stream.write(value, length);
-    return stream;
-}
-
-const LogStream& operator<<(const LogStream&, const FlyString&);
-const LogStream& operator<<(const LogStream&, const String&);
-const LogStream& operator<<(const LogStream&, const StringView&);
-const LogStream& operator<<(const LogStream&, int);
-const LogStream& operator<<(const LogStream&, long);
-const LogStream& operator<<(const LogStream&, unsigned);
-const LogStream& operator<<(const LogStream&, long long);
-const LogStream& operator<<(const LogStream&, unsigned long);
-const LogStream& operator<<(const LogStream&, unsigned long long);
-
-#if !defined(KERNEL)
-const LogStream& operator<<(const LogStream&, double);
-const LogStream& operator<<(const LogStream&, float);
-#endif
-
-template<typename T>
-const LogStream& operator<<(const LogStream& stream, Span<T> span)
-{
-    return stream << "{ " << span.data() << ", " << span.size() << " }";
-}
-
-const LogStream& operator<<(const LogStream&, const void*);
-
-inline const LogStream& operator<<(const LogStream& stream, char value)
-{
-    stream.write(&value, 1);
-    return stream;
-}
-
-inline const LogStream& operator<<(const LogStream& stream, bool value)
-{
-    return stream << (value ? "true" : "false");
-}
-
-[[deprecated("Plase use dbgln in AK/Format.h instead.")]] DebugLogStream dbg();
-
-#ifdef KERNEL
-KernelLogStream klog();
-#else
-DebugLogStream klog();
-#endif
-
-void dump_bytes(ReadonlyBytes);
-
-}
-
-using AK::dbg;
-using AK::klog;
-using AK::LogStream;
diff --git a/AK/MappedFile.cpp b/AK/MappedFile.cpp
index cd10ef3b0ca7bd..5a935746deafff 100644
--- a/AK/MappedFile.cpp
+++ b/AK/MappedFile.cpp
@@ -27,6 +27,7 @@
 #include <AK/MappedFile.h>
 #include <AK/ScopeGuard.h>
 #include <AK/String.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
diff --git a/AK/NonnullOwnPtr.h b/AK/NonnullOwnPtr.h
index 1b4e4c8ac29ecd..e2d43a6fa79c72 100644
--- a/AK/NonnullOwnPtr.h
+++ b/AK/NonnullOwnPtr.h
@@ -27,7 +27,7 @@
 #pragma once
 
 #include <AK/Assertions.h>
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <AK/RefCounted.h>
 #include <AK/StdLibExtras.h>
 #include <AK/Traits.h>
@@ -183,12 +183,6 @@ struct Traits<NonnullOwnPtr<T>> : public GenericTraits<NonnullOwnPtr<T>> {
     static bool equals(const NonnullOwnPtr<T>& a, const NonnullOwnPtr<T>& b) { return a.ptr() == b.ptr(); }
 };
 
-template<typename T>
-inline const LogStream& operator<<(const LogStream& stream, const NonnullOwnPtr<T>& value)
-{
-    return stream << value.ptr();
-}
-
 template<typename T, typename U>
 inline void swap(NonnullOwnPtr<T>& a, NonnullOwnPtr<U>& b)
 {
diff --git a/AK/NonnullRefPtr.h b/AK/NonnullRefPtr.h
index 69499c54ee90bb..d289547500752e 100644
--- a/AK/NonnullRefPtr.h
+++ b/AK/NonnullRefPtr.h
@@ -28,7 +28,7 @@
 
 #include <AK/Assertions.h>
 #include <AK/Atomic.h>
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <AK/Types.h>
 #ifdef KERNEL
 #    include <Kernel/Arch/i386/CPU.h>
@@ -339,12 +339,6 @@ inline NonnullRefPtr<T> adopt(T& object)
     return NonnullRefPtr<T>(NonnullRefPtr<T>::Adopt, object);
 }
 
-template<typename T>
-inline const LogStream& operator<<(const LogStream& stream, const NonnullRefPtr<T>& value)
-{
-    return stream << value.ptr();
-}
-
 template<typename T>
 struct Formatter<NonnullRefPtr<T>> : Formatter<const T*> {
     void format(FormatBuilder& builder, const NonnullRefPtr<T>& value)
diff --git a/AK/OSError.h b/AK/OSError.h
index 0586645694f99d..9150561f2d7ea5 100644
--- a/AK/OSError.h
+++ b/AK/OSError.h
@@ -27,6 +27,7 @@
 #pragma once
 
 #include <AK/Format.h>
+#include <errno.h>
 #include <string.h>
 
 namespace AK {
diff --git a/AK/OwnPtr.h b/AK/OwnPtr.h
index 6da0b675926dbd..7a2741f565e2bd 100644
--- a/AK/OwnPtr.h
+++ b/AK/OwnPtr.h
@@ -218,12 +218,6 @@ struct Traits<OwnPtr<T>> : public GenericTraits<OwnPtr<T>> {
     static bool equals(const OwnPtr<T>& a, const OwnPtr<T>& b) { return a.ptr() == b.ptr(); }
 };
 
-template<typename T>
-inline const LogStream& operator<<(const LogStream& stream, const OwnPtr<T>& value)
-{
-    return stream << value.ptr();
-}
-
 }
 
 using AK::OwnPtr;
diff --git a/AK/Platform.h b/AK/Platform.h
index e1a15f78ebb93a..4c063e54b0433c 100644
--- a/AK/Platform.h
+++ b/AK/Platform.h
@@ -61,6 +61,7 @@
 #define FLATTEN [[gnu::flatten]]
 
 #ifndef __serenity__
+#    include <unistd.h>
 #    define PAGE_SIZE sysconf(_SC_PAGESIZE)
 #endif
 
diff --git a/AK/RefPtr.h b/AK/RefPtr.h
index eb5b4afff946fc..0c8bafd525f6b5 100644
--- a/AK/RefPtr.h
+++ b/AK/RefPtr.h
@@ -27,7 +27,7 @@
 #pragma once
 
 #include <AK/Atomic.h>
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <AK/NonnullRefPtr.h>
 #include <AK/StdLibExtras.h>
 #include <AK/Traits.h>
@@ -461,12 +461,6 @@ class RefPtr {
     mutable Atomic<FlatPtr> m_bits { PtrTraits::default_null_value };
 };
 
-template<typename T, typename PtrTraits = RefPtrTraits<T>>
-inline const LogStream& operator<<(const LogStream& stream, const RefPtr<T, PtrTraits>& value)
-{
-    return stream << value.ptr();
-}
-
 template<typename T>
 struct Formatter<RefPtr<T>> : Formatter<const T*> {
     void format(FormatBuilder& builder, const RefPtr<T>& value)
diff --git a/AK/Time.cpp b/AK/Time.cpp
index 30b550c33f4a20..3e2f2cd9a45173 100644
--- a/AK/Time.cpp
+++ b/AK/Time.cpp
@@ -26,7 +26,6 @@
 
 #include <AK/Assertions.h>
 #include <AK/Checked.h>
-#include <AK/LogStream.h>
 #include <AK/Time.h>
 
 // Make a reasonable guess as to which timespec/timeval definition to use.
diff --git a/AK/URL.h b/AK/URL.h
index 6d68162e01fd26..ab3a5e39032491 100644
--- a/AK/URL.h
+++ b/AK/URL.h
@@ -105,11 +105,6 @@ class URL {
     String m_data_payload;
 };
 
-inline const LogStream& operator<<(const LogStream& stream, const URL& value)
-{
-    return stream << value.to_string();
-}
-
 template<>
 struct Formatter<URL> : Formatter<StringView> {
     void format(FormatBuilder& builder, const URL& value)
diff --git a/AK/Utf8View.cpp b/AK/Utf8View.cpp
index eb0143d567fea5..d28be5e425d4b4 100644
--- a/AK/Utf8View.cpp
+++ b/AK/Utf8View.cpp
@@ -25,7 +25,7 @@
  */
 
 #include <AK/Assertions.h>
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <AK/Utf8View.h>
 
 namespace AK {
diff --git a/AK/WeakPtr.h b/AK/WeakPtr.h
index 332d97bf76ec4f..59bffa273acbcc 100644
--- a/AK/WeakPtr.h
+++ b/AK/WeakPtr.h
@@ -26,7 +26,6 @@
 
 #pragma once
 
-#include <AK/LogStream.h>
 #include <AK/Weakable.h>
 
 namespace AK {
@@ -236,17 +235,6 @@ inline WeakPtr<U> Weakable<T>::make_weak_ptr() const
     return weak_ptr;
 }
 
-template<typename T>
-inline const LogStream& operator<<(const LogStream& stream, const WeakPtr<T>& value)
-{
-#ifdef KERNEL
-    auto ref = value.strong_ref();
-    return stream << ref.ptr();
-#else
-    return stream << value.ptr();
-#endif
-}
-
 template<typename T>
 struct Formatter<WeakPtr<T>> : Formatter<const T*> {
     void format(FormatBuilder& builder, const WeakPtr<T>& value)
diff --git a/AK/kstdio.h b/AK/kstdio.h
index de1a7e12678dfa..51620086e04e1c 100644
--- a/AK/kstdio.h
+++ b/AK/kstdio.h
@@ -33,21 +33,20 @@
 #        include <AK/Types.h>
 #        include <stdarg.h>
 extern "C" {
-int dbgputstr(const char*, ssize_t);
+void dbgputstr(const char*, size_t);
 int sprintf(char* buf, const char* fmt, ...) __attribute__((format(printf, 2, 3)));
 int snprintf(char* buffer, size_t, const char* fmt, ...) __attribute__((format(printf, 3, 4)));
 }
 #    endif
 #else
 #    include <stdio.h>
-inline int dbgputstr(const char* characters, ssize_t length)
+inline void dbgputstr(const char* characters, size_t length)
 {
     fwrite(characters, 1, length, stderr);
-    return 0;
 }
 #endif
 template<size_t N>
-inline int dbgputstr(const char (&array)[N])
+inline void dbgputstr(const char (&array)[N])
 {
     return ::dbgputstr(array, N);
 }
diff --git a/Kernel/ACPI/Parser.cpp b/Kernel/ACPI/Parser.cpp
index fff0b6fcab4451..8f198cb49babaf 100644
--- a/Kernel/ACPI/Parser.cpp
+++ b/Kernel/ACPI/Parser.cpp
@@ -25,6 +25,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/Format.h>
 #include <AK/StringView.h>
 #include <Kernel/ACPI/Parser.h>
 #include <Kernel/Arch/PC/BIOS.h>
@@ -32,7 +33,6 @@
 #include <Kernel/IO.h>
 #include <Kernel/PCI/Access.h>
 #include <Kernel/StdLib.h>
-#include <Kernel/VM/MemoryManager.h>
 #include <Kernel/VM/TypedMapping.h>
 
 namespace Kernel {
diff --git a/Kernel/CMakeLists.txt b/Kernel/CMakeLists.txt
index 24e6b08053f468..efb30c6a2344d5 100644
--- a/Kernel/CMakeLists.txt
+++ b/Kernel/CMakeLists.txt
@@ -243,7 +243,6 @@ set(AK_SOURCES
     ../AK/JsonParser.cpp
     ../AK/JsonValue.cpp
     ../AK/LexicalPath.cpp
-    ../AK/LogStream.cpp
     ../AK/String.cpp
     ../AK/StringBuilder.cpp
     ../AK/StringImpl.cpp
diff --git a/Kernel/DMI.cpp b/Kernel/DMI.cpp
index 51091c3012a4a0..1c9f6f51a0d595 100644
--- a/Kernel/DMI.cpp
+++ b/Kernel/DMI.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/Format.h>
 #include <AK/Singleton.h>
 #include <AK/StringView.h>
 #include <AK/Types.h>
@@ -31,7 +32,6 @@
 #include <Kernel/DMI.h>
 #include <Kernel/StdLib.h>
 #include <Kernel/VM/MappedROM.h>
-#include <Kernel/VM/MemoryManager.h>
 #include <Kernel/VM/TypedMapping.h>
 
 namespace Kernel {
diff --git a/Kernel/Devices/BXVGADevice.cpp b/Kernel/Devices/BXVGADevice.cpp
index 2fffc01bd5b4ad..54765c44c48bc9 100644
--- a/Kernel/Devices/BXVGADevice.cpp
+++ b/Kernel/Devices/BXVGADevice.cpp
@@ -25,6 +25,7 @@
  */
 
 #include <AK/Checked.h>
+#include <AK/Format.h>
 #include <AK/Singleton.h>
 #include <Kernel/Debug.h>
 #include <Kernel/Devices/BXVGADevice.h>
diff --git a/Kernel/FileSystem/InodeIdentifier.h b/Kernel/FileSystem/InodeIdentifier.h
index b869be54699beb..6244349b943092 100644
--- a/Kernel/FileSystem/InodeIdentifier.h
+++ b/Kernel/FileSystem/InodeIdentifier.h
@@ -72,12 +72,6 @@ class InodeIdentifier {
     InodeIndex m_index { 0 };
 };
 
-inline const LogStream& operator<<(const LogStream& stream, const InodeIdentifier& value)
-{
-    stream << value.fsid() << ':' << value.index().value();
-    return stream;
-}
-
 }
 
 template<>
diff --git a/Kernel/IO.h b/Kernel/IO.h
index e21b224f19acdf..80e11625d1a5dd 100644
--- a/Kernel/IO.h
+++ b/Kernel/IO.h
@@ -27,7 +27,6 @@
 #pragma once
 
 #include <AK/Assertions.h>
-#include <AK/LogStream.h>
 #include <AK/String.h>
 #include <AK/Types.h>
 #include <Kernel/Arch/i386/CPU.h>
@@ -157,11 +156,6 @@ class IOAddress {
     u16 m_address { 0 };
 };
 
-inline const LogStream& operator<<(const LogStream& stream, IOAddress value)
-{
-    return stream << "IO " << String::formatted("{:x}", value.get());
-}
-
 template<>
 struct AK::Formatter<IOAddress> : AK::Formatter<FormatString> {
     void format(FormatBuilder& builder, IOAddress value)
diff --git a/Kernel/KBuffer.h b/Kernel/KBuffer.h
index 5d1b4aa661423f..8d5a0aeed0e59f 100644
--- a/Kernel/KBuffer.h
+++ b/Kernel/KBuffer.h
@@ -38,7 +38,6 @@
 
 #include <AK/Assertions.h>
 #include <AK/ByteBuffer.h>
-#include <AK/LogStream.h>
 #include <AK/Memory.h>
 #include <AK/StringView.h>
 #include <Kernel/VM/MemoryManager.h>
@@ -175,9 +174,4 @@ class [[nodiscard]] KBuffer {
     RefPtr<KBufferImpl> m_impl;
 };
 
-inline const LogStream& operator<<(const LogStream& stream, const KBuffer& value)
-{
-    return stream << StringView(value.data(), value.size());
-}
-
 }
diff --git a/Kernel/Modules/TestModule.cpp b/Kernel/Modules/TestModule.cpp
index fbfdbc741634de..2e61e76c965493 100644
--- a/Kernel/Modules/TestModule.cpp
+++ b/Kernel/Modules/TestModule.cpp
@@ -24,7 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <Kernel/Modules/module_syms.h>
 
 extern "C" const char module_name[] = "TestModule";
diff --git a/Kernel/Net/IPv4.h b/Kernel/Net/IPv4.h
index 39f671a572b724..281a29b9bf973e 100644
--- a/Kernel/Net/IPv4.h
+++ b/Kernel/Net/IPv4.h
@@ -123,7 +123,6 @@ class [[gnu::packed]] IPv4Packet {
 };
 
 static_assert(sizeof(IPv4Packet) == 20);
-const LogStream& operator<<(const LogStream& stream, const IPv4Packet& packet);
 
 inline NetworkOrdered<u16> internet_checksum(const void* ptr, size_t count)
 {
diff --git a/Kernel/PCI/Definitions.h b/Kernel/PCI/Definitions.h
index 9fa64779bf95f4..23d3cf0da021f6 100644
--- a/Kernel/PCI/Definitions.h
+++ b/Kernel/PCI/Definitions.h
@@ -27,7 +27,6 @@
 #pragma once
 
 #include <AK/Function.h>
-#include <AK/LogStream.h>
 #include <AK/String.h>
 #include <AK/Types.h>
 #include <AK/Vector.h>
@@ -84,10 +83,7 @@ struct ID {
         return vendor_id != other.vendor_id || device_id != other.device_id;
     }
 };
-inline const LogStream& operator<<(const LogStream& stream, const ID value)
-{
-    return stream << String::formatted("({:04x}:{:04x})", value.vendor_id, value.device_id);
-}
+
 struct Address {
 public:
     Address() = default;
@@ -141,11 +137,6 @@ struct Address {
     u8 m_function { 0 };
 };
 
-inline const LogStream& operator<<(const LogStream& stream, const Address value)
-{
-    return stream << "PCI [" << String::formatted("{:04x}:{:02x}:{:02x}:{:02x}", value.seg(), value.bus(), value.device(), value.function()) << "]";
-}
-
 struct ChangeableAddress : public Address {
     ChangeableAddress()
         : Address(0)
diff --git a/Kernel/PhysicalAddress.h b/Kernel/PhysicalAddress.h
index f68cbffc534e57..9d2a2801587ce1 100644
--- a/Kernel/PhysicalAddress.h
+++ b/Kernel/PhysicalAddress.h
@@ -26,7 +26,7 @@
 
 #pragma once
 
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <AK/Types.h>
 
 class PhysicalAddress {
@@ -61,11 +61,6 @@ class PhysicalAddress {
     FlatPtr m_address { 0 };
 };
 
-inline const LogStream& operator<<(const LogStream& stream, PhysicalAddress value)
-{
-    return stream << 'P' << value.as_ptr();
-}
-
 template<>
 struct AK::Formatter<PhysicalAddress> : AK::Formatter<FormatString> {
     void format(FormatBuilder& builder, PhysicalAddress value)
diff --git a/Kernel/Process.h b/Kernel/Process.h
index 3b043d4b3e2391..c27bf874a2329f 100644
--- a/Kernel/Process.h
+++ b/Kernel/Process.h
@@ -719,11 +719,6 @@ inline ProcessID Thread::pid() const
     return m_process->pid();
 }
 
-inline const LogStream& operator<<(const LogStream& stream, const Process& process)
-{
-    return stream << process.name() << '(' << process.pid().value() << ')';
-}
-
 #define REQUIRE_NO_PROMISES                        \
     do {                                           \
         if (Process::current()->has_promises()) {  \
diff --git a/Kernel/RTC.cpp b/Kernel/RTC.cpp
index 22143c47aaf7e9..b1eb739a51888c 100644
--- a/Kernel/RTC.cpp
+++ b/Kernel/RTC.cpp
@@ -25,7 +25,6 @@
  */
 
 #include <AK/Assertions.h>
-#include <AK/LogStream.h>
 #include <AK/Time.h>
 #include <Kernel/CMOS.h>
 #include <Kernel/RTC.h>
diff --git a/Kernel/Thread.cpp b/Kernel/Thread.cpp
index de432561389519..a1c28f5f37d338 100644
--- a/Kernel/Thread.cpp
+++ b/Kernel/Thread.cpp
@@ -1027,11 +1027,6 @@ KResult Thread::make_thread_specific_region(Badge<Process>)
     return KSuccess;
 }
 
-const LogStream& operator<<(const LogStream& stream, const Thread& value)
-{
-    return stream << value.process().name() << "(" << value.pid().value() << ":" << value.tid().value() << ")";
-}
-
 RefPtr<Thread> Thread::from_tid(ThreadID tid)
 {
     RefPtr<Thread> found_thread;
diff --git a/Kernel/Thread.h b/Kernel/Thread.h
index 19176e136c82e9..67c83ca7d98814 100644
--- a/Kernel/Thread.h
+++ b/Kernel/Thread.h
@@ -1298,8 +1298,6 @@ inline IterationDecision Thread::for_each_in_state(State state, Callback callbac
     return IterationDecision::Continue;
 }
 
-const LogStream& operator<<(const LogStream&, const Thread&);
-
 }
 
 template<>
diff --git a/Kernel/VM/MemoryManager.cpp b/Kernel/VM/MemoryManager.cpp
index 73ee9d2389e7b3..d5935ee7de6801 100644
--- a/Kernel/VM/MemoryManager.cpp
+++ b/Kernel/VM/MemoryManager.cpp
@@ -475,7 +475,7 @@ PageFaultResponse MemoryManager::handle_page_fault(const PageFault& fault)
     dbgln_if(PAGE_FAULT_DEBUG, "MM: CPU[{}] handle_page_fault({:#04x}) at {}", Processor::id(), fault.code(), fault.vaddr());
     auto* region = find_region_from_vaddr(fault.vaddr());
     if (!region) {
-        dmesgln("CPU[{}] NP(error) fault at invalid address {}", Processor::id(), fault.vaddr());
+        Process::current()->space().dump_regions();
         return PageFaultResponse::ShouldCrash;
     }
 
diff --git a/Kernel/VirtualAddress.h b/Kernel/VirtualAddress.h
index 4917e8c7d819eb..132bc6f16cc462 100644
--- a/Kernel/VirtualAddress.h
+++ b/Kernel/VirtualAddress.h
@@ -26,7 +26,7 @@
 
 #pragma once
 
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <AK/Types.h>
 
 class VirtualAddress {
@@ -71,11 +71,6 @@ inline VirtualAddress operator-(const VirtualAddress& a, const VirtualAddress& b
     return VirtualAddress(a.get() - b.get());
 }
 
-inline const LogStream& operator<<(const LogStream& stream, VirtualAddress value)
-{
-    return stream << 'V' << value.as_ptr();
-}
-
 template<>
 struct AK::Formatter<VirtualAddress> : AK::Formatter<FormatString> {
     void format(FormatBuilder& builder, const VirtualAddress& value)
diff --git a/Kernel/init.cpp b/Kernel/init.cpp
index c17207468d62cc..23d90cb7fa4e24 100644
--- a/Kernel/init.cpp
+++ b/Kernel/init.cpp
@@ -72,6 +72,7 @@
 #include <Kernel/Tasks/SyncTask.h>
 #include <Kernel/Time/TimeManagement.h>
 #include <Kernel/VM/MemoryManager.h>
+#include <Kernel/kstdio.h>
 
 // Defined in the linker script
 typedef void (*ctor_func_t)();
@@ -337,7 +338,7 @@ void init_stage2(void*)
 
 UNMAP_AFTER_INIT void setup_serial_debug()
 {
-    // serial_debug will output all the klog() and dbgln() data to COM1 at
+    // serial_debug will output all the dbgln() data to COM1 at
     // 8-N-1 57600 baud. this is particularly useful for debugging the boot
     // process on live hardware.
     if (StringView(kernel_cmdline).contains("serial_debug")) {
diff --git a/Kernel/kprintf.cpp b/Kernel/kprintf.cpp
index 8f173e7350b468..4e19fc34731d13 100644
--- a/Kernel/kprintf.cpp
+++ b/Kernel/kprintf.cpp
@@ -36,7 +36,7 @@
 
 static bool serial_debug;
 // A recursive spinlock allows us to keep writing in the case where a
-// page fault happens in the middle of a dbgln(), klog(), etc
+// page fault happens in the middle of a dbgln(), etc
 static RecursiveSpinLock s_log_lock;
 
 void set_serial_debug(bool on_or_off)
@@ -148,22 +148,20 @@ static void debugger_out(char ch)
     IO::out8(0xe9, ch);
 }
 
-extern "C" int dbgputstr(const char* characters, int length)
+extern "C" void dbgputstr(const char* characters, size_t length)
 {
     if (!characters)
-        return 0;
+        return;
     ScopedSpinLock lock(s_log_lock);
-    for (int i = 0; i < length; ++i)
+    for (size_t i = 0; i < length; ++i)
         debugger_out(characters[i]);
-    return 0;
 }
 
-extern "C" int kernelputstr(const char* characters, int length)
+extern "C" void kernelputstr(const char* characters, size_t length)
 {
     if (!characters)
-        return 0;
+        return;
     ScopedSpinLock lock(s_log_lock);
-    for (int i = 0; i < length; ++i)
+    for (size_t i = 0; i < length; ++i)
         console_out(characters[i]);
-    return 0;
 }
diff --git a/Kernel/kstdio.h b/Kernel/kstdio.h
index 067ba8edc035e8..c00ef111271ec3 100644
--- a/Kernel/kstdio.h
+++ b/Kernel/kstdio.h
@@ -29,8 +29,8 @@
 #include <AK/Types.h>
 
 extern "C" {
-int dbgputstr(const char*, int);
-int kernelputstr(const char*, int);
+void dbgputstr(const char*, size_t);
+void kernelputstr(const char*, size_t);
 int snprintf(char* buf, size_t, const char* fmt, ...) __attribute__((format(printf, 3, 4)));
 void set_serial_debug(bool on_or_off);
 int get_serial_debug();
diff --git a/Userland/Applications/About/main.cpp b/Userland/Applications/About/main.cpp
index 8b03c00f42ded9..803905dc8c58b9 100644
--- a/Userland/Applications/About/main.cpp
+++ b/Userland/Applications/About/main.cpp
@@ -29,7 +29,7 @@
 #include <LibGUI/Icon.h>
 #include <LibGfx/Bitmap.h>
 #include <stdio.h>
-#include <sys/utsname.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/Browser/main.cpp b/Userland/Applications/Browser/main.cpp
index 0440597caeac33..77a11934d2fabd 100644
--- a/Userland/Applications/Browser/main.cpp
+++ b/Userland/Applications/Browser/main.cpp
@@ -26,7 +26,6 @@
 
 #include "BookmarksBarWidget.h"
 #include "Browser.h"
-#include "InspectorWidget.h"
 #include "Tab.h"
 #include "WindowActions.h"
 #include <AK/StringBuilder.h>
@@ -47,6 +46,7 @@
 #include <LibWeb/Loader/ResourceLoader.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 namespace Browser {
 
diff --git a/Userland/Applications/Calculator/main.cpp b/Userland/Applications/Calculator/main.cpp
index 91ee969d231482..79aaab58a4d3e5 100644
--- a/Userland/Applications/Calculator/main.cpp
+++ b/Userland/Applications/Calculator/main.cpp
@@ -34,6 +34,7 @@
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/Calendar/main.cpp b/Userland/Applications/Calendar/main.cpp
index be1a23f7b31c40..8406927b7f43be 100644
--- a/Userland/Applications/Calendar/main.cpp
+++ b/Userland/Applications/Calendar/main.cpp
@@ -38,9 +38,9 @@
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/Color.h>
-#include <LibGfx/Font.h>
 #include <LibGfx/FontDatabase.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/CrashReporter/main.cpp b/Userland/Applications/CrashReporter/main.cpp
index 00029f8d22894b..e1a02b28743b9c 100644
--- a/Userland/Applications/CrashReporter/main.cpp
+++ b/Userland/Applications/CrashReporter/main.cpp
@@ -48,6 +48,7 @@
 #include <LibGUI/Widget.h>
 #include <LibGUI/Window.h>
 #include <string.h>
+#include <unistd.h>
 
 struct TitleAndText {
     String title;
diff --git a/Userland/Applications/Debugger/main.cpp b/Userland/Applications/Debugger/main.cpp
index fe91440b87f812..fa2ec66e671e4b 100644
--- a/Userland/Applications/Debugger/main.cpp
+++ b/Userland/Applications/Debugger/main.cpp
@@ -27,7 +27,6 @@
 #include <AK/Assertions.h>
 #include <AK/ByteBuffer.h>
 #include <AK/Demangle.h>
-#include <AK/LogStream.h>
 #include <AK/StringBuilder.h>
 #include <LibC/sys/arch/i386/regs.h>
 #include <LibCore/ArgsParser.h>
diff --git a/Userland/Applications/DisplaySettings/main.cpp b/Userland/Applications/DisplaySettings/main.cpp
index f2dbcc2b3330af..a7a7a6de7da7ad 100644
--- a/Userland/Applications/DisplaySettings/main.cpp
+++ b/Userland/Applications/DisplaySettings/main.cpp
@@ -32,10 +32,10 @@
 #include <LibGUI/Menu.h>
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/TabWidget.h>
-#include <LibGUI/Widget.h>
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/FontEditor/main.cpp b/Userland/Applications/FontEditor/main.cpp
index 8a370160bd22f0..61d14248dd656c 100644
--- a/Userland/Applications/FontEditor/main.cpp
+++ b/Userland/Applications/FontEditor/main.cpp
@@ -41,6 +41,7 @@
 #include <LibGfx/FontDatabase.h>
 #include <LibGfx/Point.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/Help/main.cpp b/Userland/Applications/Help/main.cpp
index 02089b1d59dfb3..50d2d816ae1cc7 100644
--- a/Userland/Applications/Help/main.cpp
+++ b/Userland/Applications/Help/main.cpp
@@ -50,6 +50,7 @@
 #include <libgen.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 int main(int argc, char* argv[])
 {
diff --git a/Userland/Applications/HexEditor/main.cpp b/Userland/Applications/HexEditor/main.cpp
index 5c4a22b20a2bdf..f9217af2432048 100644
--- a/Userland/Applications/HexEditor/main.cpp
+++ b/Userland/Applications/HexEditor/main.cpp
@@ -29,6 +29,7 @@
 #include <LibGUI/MenuBar.h>
 #include <LibGfx/Bitmap.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/IRCClient/IRCClient.cpp b/Userland/Applications/IRCClient/IRCClient.cpp
index 2eb7c037051c44..910acf91cc9ba5 100644
--- a/Userland/Applications/IRCClient/IRCClient.cpp
+++ b/Userland/Applications/IRCClient/IRCClient.cpp
@@ -39,6 +39,7 @@
 #include <pwd.h>
 #include <stdio.h>
 #include <strings.h>
+#include <unistd.h>
 
 enum IRCNumeric {
     RPL_WELCOME = 1,
diff --git a/Userland/Applications/IRCClient/main.cpp b/Userland/Applications/IRCClient/main.cpp
index 2cd00843faa300..94550899704e80 100644
--- a/Userland/Applications/IRCClient/main.cpp
+++ b/Userland/Applications/IRCClient/main.cpp
@@ -30,6 +30,7 @@
 #include <LibGUI/Application.h>
 #include <LibGUI/MessageBox.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/KeyboardMapper/main.cpp b/Userland/Applications/KeyboardMapper/main.cpp
index 654eb44fd52577..ad719dcbf3f729 100644
--- a/Userland/Applications/KeyboardMapper/main.cpp
+++ b/Userland/Applications/KeyboardMapper/main.cpp
@@ -32,6 +32,7 @@
 #include <LibGUI/Icon.h>
 #include <LibGUI/Menu.h>
 #include <LibGUI/MenuBar.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/PixelPaint/main.cpp b/Userland/Applications/PixelPaint/main.cpp
index e7c88d38498ed6..c8efb948303451 100644
--- a/Userland/Applications/PixelPaint/main.cpp
+++ b/Userland/Applications/PixelPaint/main.cpp
@@ -44,14 +44,13 @@
 #include <LibGUI/Clipboard.h>
 #include <LibGUI/FilePicker.h>
 #include <LibGUI/Icon.h>
-#include <LibGUI/Menu.h>
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/MessageBox.h>
-#include <LibGUI/TableView.h>
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/Matrix4x4.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/Run/main.cpp b/Userland/Applications/Run/main.cpp
index 706215a49cc935..3513da9d11fbcc 100644
--- a/Userland/Applications/Run/main.cpp
+++ b/Userland/Applications/Run/main.cpp
@@ -24,14 +24,10 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/LexicalPath.h>
+#include "RunWindow.h"
 #include <AK/StringBuilder.h>
-#include <AK/Types.h>
-#include <AK/URL.h>
 #include <LibGUI/Application.h>
-#include <string.h>
-
-#include "RunWindow.h"
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/Serendipity/main.cpp b/Userland/Applications/Serendipity/main.cpp
index b176dd12f640bf..f25bd052cbef6b 100644
--- a/Userland/Applications/Serendipity/main.cpp
+++ b/Userland/Applications/Serendipity/main.cpp
@@ -28,6 +28,7 @@
 #include <LibGUI/Application.h>
 #include <LibGUI/Icon.h>
 #include <LibGUI/Window.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/SpaceAnalyzer/main.cpp b/Userland/Applications/SpaceAnalyzer/main.cpp
index 9cd199e2a1af73..50d06bea1dec54 100644
--- a/Userland/Applications/SpaceAnalyzer/main.cpp
+++ b/Userland/Applications/SpaceAnalyzer/main.cpp
@@ -43,6 +43,7 @@
 #include <LibGUI/MessageBox.h>
 #include <LibGUI/StatusBar.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 static const char* APP_NAME = "Space Analyzer";
 
diff --git a/Userland/Applications/Spreadsheet/Spreadsheet.cpp b/Userland/Applications/Spreadsheet/Spreadsheet.cpp
index 48bdbc5e977732..1ce8c0d3b6b78a 100644
--- a/Userland/Applications/Spreadsheet/Spreadsheet.cpp
+++ b/Userland/Applications/Spreadsheet/Spreadsheet.cpp
@@ -40,6 +40,7 @@
 #include <LibJS/Parser.h>
 #include <LibJS/Runtime/Function.h>
 #include <ctype.h>
+#include <unistd.h>
 
 namespace Spreadsheet {
 
diff --git a/Userland/Applications/Spreadsheet/main.cpp b/Userland/Applications/Spreadsheet/main.cpp
index f3065316455335..805b84336509d7 100644
--- a/Userland/Applications/Spreadsheet/main.cpp
+++ b/Userland/Applications/Spreadsheet/main.cpp
@@ -33,11 +33,11 @@
 #include <LibGUI/Application.h>
 #include <LibGUI/Clipboard.h>
 #include <LibGUI/FilePicker.h>
-#include <LibGUI/Forward.h>
 #include <LibGUI/Icon.h>
 #include <LibGUI/Menu.h>
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Window.h>
+#include <unistd.h>
 
 int main(int argc, char* argv[])
 {
diff --git a/Userland/Applications/TextEditor/main.cpp b/Userland/Applications/TextEditor/main.cpp
index f549c0564a86b8..0bf5c5c8a50e08 100644
--- a/Userland/Applications/TextEditor/main.cpp
+++ b/Userland/Applications/TextEditor/main.cpp
@@ -29,6 +29,7 @@
 #include <LibGUI/MenuBar.h>
 #include <LibGfx/Bitmap.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Applications/ThemeEditor/main.cpp b/Userland/Applications/ThemeEditor/main.cpp
index 4daa17488ef0e1..2f503e1f4bfb7c 100644
--- a/Userland/Applications/ThemeEditor/main.cpp
+++ b/Userland/Applications/ThemeEditor/main.cpp
@@ -32,6 +32,7 @@
 #include <LibGUI/Icon.h>
 #include <LibGUI/Model.h>
 #include <LibGUI/Window.h>
+#include <unistd.h>
 
 class ColorRoleModel final : public GUI::Model {
 public:
diff --git a/Userland/Demos/Cube/Cube.cpp b/Userland/Demos/Cube/Cube.cpp
index 6e0fb1e8b58cae..30088c9607492b 100644
--- a/Userland/Demos/Cube/Cube.cpp
+++ b/Userland/Demos/Cube/Cube.cpp
@@ -37,10 +37,9 @@
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/Matrix4x4.h>
 #include <LibGfx/Vector3.h>
-#include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <time.h>
+#include <unistd.h>
 
 const int WIDTH = 200;
 const int HEIGHT = 200;
diff --git a/Userland/Demos/Eyes/main.cpp b/Userland/Demos/Eyes/main.cpp
index 3db722a882bc8c..5b120ae2603e4e 100644
--- a/Userland/Demos/Eyes/main.cpp
+++ b/Userland/Demos/Eyes/main.cpp
@@ -32,6 +32,7 @@
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
+#include <unistd.h>
 
 int main(int argc, char* argv[])
 {
diff --git a/Userland/Demos/Fire/Fire.cpp b/Userland/Demos/Fire/Fire.cpp
index 03986dea01eca9..c76b3e8bd44454 100644
--- a/Userland/Demos/Fire/Fire.cpp
+++ b/Userland/Demos/Fire/Fire.cpp
@@ -53,6 +53,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <time.h>
+#include <unistd.h>
 
 #define FIRE_WIDTH 320
 #define FIRE_HEIGHT 168
diff --git a/Userland/Demos/LibGfxDemo/main.cpp b/Userland/Demos/LibGfxDemo/main.cpp
index 8d40798e308158..2122d40a1a09f7 100644
--- a/Userland/Demos/LibGfxDemo/main.cpp
+++ b/Userland/Demos/LibGfxDemo/main.cpp
@@ -30,10 +30,10 @@
 #include <LibGUI/Widget.h>
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
-#include <LibGfx/Font.h>
 #include <LibGfx/FontDatabase.h>
 #include <LibGfx/Painter.h>
 #include <LibGfx/Path.h>
+#include <unistd.h>
 
 const int WIDTH = 780;
 const int HEIGHT = 600;
diff --git a/Userland/Demos/LibGfxScaleDemo/main.cpp b/Userland/Demos/LibGfxScaleDemo/main.cpp
index 9a60b911d17133..e7763b3e65e3c3 100644
--- a/Userland/Demos/LibGfxScaleDemo/main.cpp
+++ b/Userland/Demos/LibGfxScaleDemo/main.cpp
@@ -31,12 +31,12 @@
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/Font.h>
-#include <LibGfx/FontDatabase.h>
 #include <LibGfx/Painter.h>
 #include <LibGfx/Palette.h>
 #include <LibGfx/Path.h>
 #include <LibGfx/SystemTheme.h>
 #include <LibGfx/WindowTheme.h>
+#include <unistd.h>
 
 const int WIDTH = 300;
 const int HEIGHT = 200;
diff --git a/Userland/Demos/Mouse/main.cpp b/Userland/Demos/Mouse/main.cpp
index 6cd3d20289336a..547c5104697ed4 100644
--- a/Userland/Demos/Mouse/main.cpp
+++ b/Userland/Demos/Mouse/main.cpp
@@ -36,6 +36,7 @@
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/Path.h>
+#include <unistd.h>
 
 #include <math.h>
 
diff --git a/Userland/Demos/Screensaver/Screensaver.cpp b/Userland/Demos/Screensaver/Screensaver.cpp
index 889106f8d7d7af..bf6166a1547de8 100644
--- a/Userland/Demos/Screensaver/Screensaver.cpp
+++ b/Userland/Demos/Screensaver/Screensaver.cpp
@@ -33,6 +33,7 @@
 #include <LibGfx/Bitmap.h>
 #include <stdio.h>
 #include <time.h>
+#include <unistd.h>
 
 class Screensaver final : public GUI::Widget {
     C_OBJECT(Screensaver)
diff --git a/Userland/Demos/WidgetGallery/main.cpp b/Userland/Demos/WidgetGallery/main.cpp
index 352b864e7e13e7..63d3aa5a416956 100644
--- a/Userland/Demos/WidgetGallery/main.cpp
+++ b/Userland/Demos/WidgetGallery/main.cpp
@@ -31,6 +31,7 @@
 #include <LibGUI/Menu.h>
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Window.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/DevTools/HackStudio/CursorTool.cpp b/Userland/DevTools/HackStudio/CursorTool.cpp
index 04f74d526fd7e0..de6e74c31c8bb1 100644
--- a/Userland/DevTools/HackStudio/CursorTool.cpp
+++ b/Userland/DevTools/HackStudio/CursorTool.cpp
@@ -29,7 +29,6 @@
 #include "FormWidget.h"
 #include "WidgetTreeModel.h"
 #include <AK/Debug.h>
-#include <AK/LogStream.h>
 #include <LibGfx/Palette.h>
 
 namespace HackStudio {
diff --git a/Userland/DevTools/HackStudio/Git/GitWidget.cpp b/Userland/DevTools/HackStudio/Git/GitWidget.cpp
index e15583ff8da303..c0ef18f00c18a1 100644
--- a/Userland/DevTools/HackStudio/Git/GitWidget.cpp
+++ b/Userland/DevTools/HackStudio/Git/GitWidget.cpp
@@ -26,7 +26,6 @@
 
 #include "GitWidget.h"
 #include "GitFilesModel.h"
-#include <AK/LogStream.h>
 #include <LibCore/File.h>
 #include <LibDiff/Format.h>
 #include <LibGUI/Application.h>
diff --git a/Userland/DevTools/HackStudio/WidgetTool.cpp b/Userland/DevTools/HackStudio/WidgetTool.cpp
index 73626ebbf88209..a0073c8ede26b6 100644
--- a/Userland/DevTools/HackStudio/WidgetTool.cpp
+++ b/Userland/DevTools/HackStudio/WidgetTool.cpp
@@ -25,7 +25,7 @@
  */
 
 #include "WidgetTool.h"
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 
 namespace HackStudio {
 
diff --git a/Userland/DevTools/Playground/main.cpp b/Userland/DevTools/Playground/main.cpp
index e6f7871f5fa97c..dc63bd47b6db29 100644
--- a/Userland/DevTools/Playground/main.cpp
+++ b/Userland/DevTools/Playground/main.cpp
@@ -28,7 +28,6 @@
 #include <AK/URL.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/File.h>
-#include <LibCore/Property.h>
 #include <LibDesktop/Launcher.h>
 #include <LibGUI/Application.h>
 #include <LibGUI/AutocompleteProvider.h>
@@ -45,6 +44,7 @@
 #include <LibGUI/TextEditor.h>
 #include <LibGUI/Window.h>
 #include <string.h>
+#include <unistd.h>
 
 namespace {
 
diff --git a/Userland/DevTools/UserspaceEmulator/Emulator.cpp b/Userland/DevTools/UserspaceEmulator/Emulator.cpp
index 9ed37961e8c3fd..091e77a45373e6 100644
--- a/Userland/DevTools/UserspaceEmulator/Emulator.cpp
+++ b/Userland/DevTools/UserspaceEmulator/Emulator.cpp
@@ -38,6 +38,7 @@
 #include <LibX86/ELFSymbolProvider.h>
 #include <fcntl.h>
 #include <syscall.h>
+#include <unistd.h>
 
 #if defined(__GNUC__) && !defined(__clang__)
 #    pragma GCC optimize("O3")
diff --git a/Userland/DevTools/UserspaceEmulator/MallocTracer.cpp b/Userland/DevTools/UserspaceEmulator/MallocTracer.cpp
index 0c753d0fdd03d8..2390d255baff7d 100644
--- a/Userland/DevTools/UserspaceEmulator/MallocTracer.cpp
+++ b/Userland/DevTools/UserspaceEmulator/MallocTracer.cpp
@@ -28,10 +28,10 @@
 #include "Emulator.h"
 #include "MmapRegion.h"
 #include <AK/Debug.h>
-#include <AK/LogStream.h>
 #include <AK/TemporaryChange.h>
 #include <mallocdefs.h>
 #include <string.h>
+#include <unistd.h>
 
 namespace UserspaceEmulator {
 
diff --git a/Userland/DevTools/UserspaceEmulator/Report.h b/Userland/DevTools/UserspaceEmulator/Report.h
index 96face8914a156..9d4a01011aaee3 100644
--- a/Userland/DevTools/UserspaceEmulator/Report.h
+++ b/Userland/DevTools/UserspaceEmulator/Report.h
@@ -26,7 +26,7 @@
 
 #pragma once
 
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 
 extern bool g_report_to_debug;
 
diff --git a/Userland/DevTools/UserspaceEmulator/SoftCPU.cpp b/Userland/DevTools/UserspaceEmulator/SoftCPU.cpp
index 62a975d8f50735..3c4fb2fd417ecc 100644
--- a/Userland/DevTools/UserspaceEmulator/SoftCPU.cpp
+++ b/Userland/DevTools/UserspaceEmulator/SoftCPU.cpp
@@ -31,6 +31,7 @@
 #include <math.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 #if defined(__GNUC__) && !defined(__clang__)
 #    pragma GCC optimize("O3")
diff --git a/Userland/DevTools/UserspaceEmulator/main.cpp b/Userland/DevTools/UserspaceEmulator/main.cpp
index 8fff65cd0f2cb4..f91d721b411eeb 100644
--- a/Userland/DevTools/UserspaceEmulator/main.cpp
+++ b/Userland/DevTools/UserspaceEmulator/main.cpp
@@ -25,16 +25,13 @@
  */
 
 #include "Emulator.h"
-#include "SoftCPU.h"
 #include <AK/Format.h>
 #include <AK/LexicalPath.h>
-#include <AK/MappedFile.h>
 #include <AK/StringBuilder.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/DirIterator.h>
-#include <LibELF/Image.h>
-#include <getopt.h>
 #include <pthread.h>
+#include <serenity.h>
 #include <string.h>
 
 bool g_report_to_debug = false;
diff --git a/Userland/DynamicLoader/main.cpp b/Userland/DynamicLoader/main.cpp
index 43545dcd483dea..0f3685b434dcbc 100644
--- a/Userland/DynamicLoader/main.cpp
+++ b/Userland/DynamicLoader/main.cpp
@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/LogStream.h>
 #include <LibC/sys/internals.h>
 #include <LibC/unistd.h>
 #include <LibELF/AuxiliaryVector.h>
diff --git a/Userland/DynamicLoader/misc.cpp b/Userland/DynamicLoader/misc.cpp
index f8f172a7c6f7d0..9cc18cab8a51fc 100644
--- a/Userland/DynamicLoader/misc.cpp
+++ b/Userland/DynamicLoader/misc.cpp
@@ -25,7 +25,7 @@
  */
 
 #include "misc.h"
-#include "AK/LogStream.h"
+#include <AK/Format.h>
 
 extern "C" {
 const char* __cxa_demangle(const char*, void*, void*, int*)
diff --git a/Userland/Games/2048/main.cpp b/Userland/Games/2048/main.cpp
index 7cf03fde35628d..d82e42c29370be 100644
--- a/Userland/Games/2048/main.cpp
+++ b/Userland/Games/2048/main.cpp
@@ -40,6 +40,7 @@
 #include <LibGUI/Window.h>
 #include <stdio.h>
 #include <time.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Games/Breakout/Game.cpp b/Userland/Games/Breakout/Game.cpp
index c66f45d2b41c8b..1d56509e3b1681 100644
--- a/Userland/Games/Breakout/Game.cpp
+++ b/Userland/Games/Breakout/Game.cpp
@@ -31,6 +31,7 @@
 #include <LibGUI/Painter.h>
 #include <LibGfx/Font.h>
 #include <LibGfx/StandardCursor.h>
+#include <unistd.h>
 
 namespace Breakout {
 
diff --git a/Userland/Games/Breakout/main.cpp b/Userland/Games/Breakout/main.cpp
index 560b7aeaec65f0..c12a9d296f0521 100644
--- a/Userland/Games/Breakout/main.cpp
+++ b/Userland/Games/Breakout/main.cpp
@@ -31,6 +31,7 @@
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Games/Chess/Engine.cpp b/Userland/Games/Chess/Engine.cpp
index a0ccc72ba7af91..e709e319bfe608 100644
--- a/Userland/Games/Chess/Engine.cpp
+++ b/Userland/Games/Chess/Engine.cpp
@@ -29,7 +29,7 @@
 #include <fcntl.h>
 #include <spawn.h>
 #include <stdio.h>
-#include <stdlib.h>
+#include <unistd.h>
 
 Engine::~Engine()
 {
diff --git a/Userland/Games/Chess/main.cpp b/Userland/Games/Chess/main.cpp
index 7f01004eaafed6..540cfe558785e5 100644
--- a/Userland/Games/Chess/main.cpp
+++ b/Userland/Games/Chess/main.cpp
@@ -36,6 +36,7 @@
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/MessageBox.h>
 #include <LibGUI/Window.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Games/Conway/main.cpp b/Userland/Games/Conway/main.cpp
index d266d3bfdb6575..f103cabfbbc171 100644
--- a/Userland/Games/Conway/main.cpp
+++ b/Userland/Games/Conway/main.cpp
@@ -31,6 +31,7 @@
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Window.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Games/Minesweeper/main.cpp b/Userland/Games/Minesweeper/main.cpp
index 3247194abc9c4c..2541234426a927 100644
--- a/Userland/Games/Minesweeper/main.cpp
+++ b/Userland/Games/Minesweeper/main.cpp
@@ -37,6 +37,7 @@
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Window.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Games/Pong/main.cpp b/Userland/Games/Pong/main.cpp
index 0af4776b45d8c6..34ebe0f2392adf 100644
--- a/Userland/Games/Pong/main.cpp
+++ b/Userland/Games/Pong/main.cpp
@@ -32,6 +32,7 @@
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Window.h>
 #include <LibGfx/Bitmap.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Games/Snake/main.cpp b/Userland/Games/Snake/main.cpp
index a3156c4c385441..e48de628c33c4d 100644
--- a/Userland/Games/Snake/main.cpp
+++ b/Userland/Games/Snake/main.cpp
@@ -35,6 +35,7 @@
 #include <LibGUI/MenuBar.h>
 #include <LibGUI/Window.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Libraries/LibC/cxxabi.cpp b/Userland/Libraries/LibC/cxxabi.cpp
index 073956c1896667..064c39d87dd9c6 100644
--- a/Userland/Libraries/LibC/cxxabi.cpp
+++ b/Userland/Libraries/LibC/cxxabi.cpp
@@ -25,12 +25,13 @@
  */
 
 #include <AK/Debug.h>
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <assert.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/internals.h>
 #include <sys/mman.h>
+#include <unistd.h>
 
 extern "C" {
 
diff --git a/Userland/Libraries/LibC/dlfcn.cpp b/Userland/Libraries/LibC/dlfcn.cpp
index 95652464067b43..df6d8680efa100 100644
--- a/Userland/Libraries/LibC/dlfcn.cpp
+++ b/Userland/Libraries/LibC/dlfcn.cpp
@@ -29,13 +29,11 @@
 #include <AK/RefPtr.h>
 #include <AK/ScopeGuard.h>
 #include <AK/String.h>
-#include <AK/StringBuilder.h>
 #include <LibELF/DynamicLoader.h>
 #include <assert.h>
 #include <dlfcn.h>
 #include <fcntl.h>
-#include <stdio.h>
-#include <stdlib.h>
+#include <unistd.h>
 
 // NOTE: The string here should never include a trailing newline (according to POSIX)
 String g_dlerror_msg;
diff --git a/Userland/Libraries/LibC/locale.cpp b/Userland/Libraries/LibC/locale.cpp
index d4c5401a24f76f..7524d33e8b159a 100644
--- a/Userland/Libraries/LibC/locale.cpp
+++ b/Userland/Libraries/LibC/locale.cpp
@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/LogStream.h>
 #include <assert.h>
 #include <locale.h>
 #include <stdio.h>
diff --git a/Userland/Libraries/LibC/malloc.cpp b/Userland/Libraries/LibC/malloc.cpp
index 6115e6146a110b..5df71f1dc7b6b0 100644
--- a/Userland/Libraries/LibC/malloc.cpp
+++ b/Userland/Libraries/LibC/malloc.cpp
@@ -26,7 +26,6 @@
 
 #include <AK/Debug.h>
 #include <AK/InlineLinkedList.h>
-#include <AK/LogStream.h>
 #include <AK/ScopedValueRollback.h>
 #include <AK/Vector.h>
 #include <LibELF/AuxiliaryVector.h>
diff --git a/Userland/Libraries/LibC/scanf.cpp b/Userland/Libraries/LibC/scanf.cpp
index 13f306d5aa8da3..7e517c970c0096 100644
--- a/Userland/Libraries/LibC/scanf.cpp
+++ b/Userland/Libraries/LibC/scanf.cpp
@@ -25,8 +25,8 @@
  */
 
 #include <AK/Assertions.h>
+#include <AK/Format.h>
 #include <AK/GenericLexer.h>
-#include <AK/LogStream.h>
 #include <AK/StdLibExtras.h>
 #include <ctype.h>
 #include <stdarg.h>
diff --git a/Userland/Libraries/LibC/stdio.cpp b/Userland/Libraries/LibC/stdio.cpp
index a4d47008188eeb..56e74dd5cb7459 100644
--- a/Userland/Libraries/LibC/stdio.cpp
+++ b/Userland/Libraries/LibC/stdio.cpp
@@ -1048,10 +1048,9 @@ void dbgputch(char ch)
     syscall(SC_dbgputch, ch);
 }
 
-int dbgputstr(const char* characters, ssize_t length)
+void dbgputstr(const char* characters, size_t length)
 {
-    int rc = syscall(SC_dbgputstr, characters, length);
-    __RETURN_WITH_ERRNO(rc, rc, -1);
+    syscall(SC_dbgputstr, characters, length);
 }
 
 char* tmpnam(char*)
diff --git a/Userland/Libraries/LibC/stdio.h b/Userland/Libraries/LibC/stdio.h
index cc76741d0b56a4..018c57fe474d72 100644
--- a/Userland/Libraries/LibC/stdio.h
+++ b/Userland/Libraries/LibC/stdio.h
@@ -94,7 +94,7 @@ int vsnprintf(char* buffer, size_t, const char* fmt, va_list) __attribute__((for
 int fprintf(FILE*, const char* fmt, ...) __attribute__((format(printf, 2, 3)));
 int printf(const char* fmt, ...) __attribute__((format(printf, 1, 2)));
 void dbgputch(char);
-int dbgputstr(const char*, ssize_t);
+void dbgputstr(const char*, size_t);
 int sprintf(char* buffer, const char* fmt, ...) __attribute__((format(printf, 2, 3)));
 int snprintf(char* buffer, size_t, const char* fmt, ...) __attribute__((format(printf, 3, 4)));
 int putchar(int ch);
diff --git a/Userland/Libraries/LibC/sys/ptrace.cpp b/Userland/Libraries/LibC/sys/ptrace.cpp
index f285ef5bb580fd..b53bb4846513d6 100644
--- a/Userland/Libraries/LibC/sys/ptrace.cpp
+++ b/Userland/Libraries/LibC/sys/ptrace.cpp
@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/LogStream.h>
 #include <errno.h>
 #include <sys/ptrace.h>
 #include <syscall.h>
diff --git a/Userland/Libraries/LibChess/Chess.cpp b/Userland/Libraries/LibChess/Chess.cpp
index 3bce22f647781c..bc886160554d72 100644
--- a/Userland/Libraries/LibChess/Chess.cpp
+++ b/Userland/Libraries/LibChess/Chess.cpp
@@ -25,7 +25,6 @@
  */
 
 #include <AK/Assertions.h>
-#include <AK/LogStream.h>
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <AK/Vector.h>
diff --git a/Userland/Libraries/LibCompress/Deflate.cpp b/Userland/Libraries/LibCompress/Deflate.cpp
index 54f7911ec388d7..23406300337076 100644
--- a/Userland/Libraries/LibCompress/Deflate.cpp
+++ b/Userland/Libraries/LibCompress/Deflate.cpp
@@ -27,7 +27,6 @@
 #include <AK/Array.h>
 #include <AK/Assertions.h>
 #include <AK/BinarySearch.h>
-#include <AK/LogStream.h>
 #include <AK/MemoryStream.h>
 
 #include <LibCompress/Deflate.h>
diff --git a/Userland/Libraries/LibCore/Account.cpp b/Userland/Libraries/LibCore/Account.cpp
index efe012003382ff..1e999d6629aacf 100644
--- a/Userland/Libraries/LibCore/Account.cpp
+++ b/Userland/Libraries/LibCore/Account.cpp
@@ -29,6 +29,7 @@
 #include <AK/ScopeGuard.h>
 #include <LibCore/Account.h>
 #include <LibCore/File.h>
+#include <errno.h>
 #include <grp.h>
 #include <pwd.h>
 #include <stdio.h>
diff --git a/Userland/Libraries/LibCore/Command.cpp b/Userland/Libraries/LibCore/Command.cpp
index d75a6457777546..ea5764bb01c96f 100644
--- a/Userland/Libraries/LibCore/Command.cpp
+++ b/Userland/Libraries/LibCore/Command.cpp
@@ -26,7 +26,7 @@
 
 #include "Command.h"
 #include <AK/ByteBuffer.h>
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <AK/ScopeGuard.h>
 #include <LibCore/File.h>
 #include <fcntl.h>
diff --git a/Userland/Libraries/LibCore/DateTime.cpp b/Userland/Libraries/LibCore/DateTime.cpp
index 804abac3de1b5d..4e9a8ec3454a8c 100644
--- a/Userland/Libraries/LibCore/DateTime.cpp
+++ b/Userland/Libraries/LibCore/DateTime.cpp
@@ -255,9 +255,4 @@ bool DateTime::is_before(const String& other) const
     return __builtin_strcasecmp(now_string.characters(), other.characters()) < 0;
 }
 
-const LogStream& operator<<(const LogStream& stream, const DateTime& value)
-{
-    return stream << value.to_string();
-}
-
 }
diff --git a/Userland/Libraries/LibCore/DateTime.h b/Userland/Libraries/LibCore/DateTime.h
index 15515cc0fda798..9101a9306ac740 100644
--- a/Userland/Libraries/LibCore/DateTime.h
+++ b/Userland/Libraries/LibCore/DateTime.h
@@ -69,6 +69,4 @@ class DateTime {
     unsigned m_second { 0 };
 };
 
-const LogStream& operator<<(const LogStream&, const DateTime&);
-
 }
diff --git a/Userland/Libraries/LibCore/DirIterator.cpp b/Userland/Libraries/LibCore/DirIterator.cpp
index 3dbeecf24ff6a8..83d4f32786d60b 100644
--- a/Userland/Libraries/LibCore/DirIterator.cpp
+++ b/Userland/Libraries/LibCore/DirIterator.cpp
@@ -27,6 +27,7 @@
 #include <AK/Vector.h>
 #include <LibCore/DirIterator.h>
 #include <errno.h>
+#include <unistd.h>
 
 namespace Core {
 
diff --git a/Userland/Libraries/LibCore/FileWatcher.cpp b/Userland/Libraries/LibCore/FileWatcher.cpp
index 70ed9928bc6abd..46db6686d69cc2 100644
--- a/Userland/Libraries/LibCore/FileWatcher.cpp
+++ b/Userland/Libraries/LibCore/FileWatcher.cpp
@@ -40,6 +40,7 @@
 #include <fcntl.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 namespace Core {
 
diff --git a/Userland/Libraries/LibCore/GetPassword.cpp b/Userland/Libraries/LibCore/GetPassword.cpp
index 88bb27345a3ccd..98c3ab0ed34fc3 100644
--- a/Userland/Libraries/LibCore/GetPassword.cpp
+++ b/Userland/Libraries/LibCore/GetPassword.cpp
@@ -29,6 +29,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <termios.h>
+#include <unistd.h>
 
 namespace Core {
 
diff --git a/Userland/Libraries/LibCore/Object.cpp b/Userland/Libraries/LibCore/Object.cpp
index 800f5573841495..854467a35669bf 100644
--- a/Userland/Libraries/LibCore/Object.cpp
+++ b/Userland/Libraries/LibCore/Object.cpp
@@ -262,9 +262,4 @@ void Object::register_property(const String& name, Function<JsonValue()> getter,
     m_properties.set(name, make<Property>(name, move(getter), move(setter)));
 }
 
-const LogStream& operator<<(const LogStream& stream, const Object& object)
-{
-    return stream << object.class_name() << '{' << &object << '}';
-}
-
 }
diff --git a/Userland/Libraries/LibCore/Object.h b/Userland/Libraries/LibCore/Object.h
index d5dcefd01f1d1c..6295d1d75b0b0b 100644
--- a/Userland/Libraries/LibCore/Object.h
+++ b/Userland/Libraries/LibCore/Object.h
@@ -223,8 +223,6 @@ T* Object::find_descendant_of_type_named(const String& name) requires IsBaseOf<O
     return found_child;
 }
 
-const LogStream& operator<<(const LogStream&, const Object&);
-
 #define REGISTER_INT_PROPERTY(property_name, getter, setter) \
     register_property(                                       \
         property_name,                                       \
diff --git a/Userland/Libraries/LibCore/SocketAddress.cpp b/Userland/Libraries/LibCore/SocketAddress.cpp
index d4d451a15019d4..e69de29bb2d1d6 100644
--- a/Userland/Libraries/LibCore/SocketAddress.cpp
+++ b/Userland/Libraries/LibCore/SocketAddress.cpp
@@ -1,36 +0,0 @@
-/*
- * Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright notice, this
- *    list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- *    this list of conditions and the following disclaimer in the documentation
- *    and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <LibCore/SocketAddress.h>
-
-namespace Core {
-
-const LogStream& operator<<(const LogStream& stream, const SocketAddress& value)
-{
-    return stream << value.to_string();
-}
-
-}
diff --git a/Userland/Libraries/LibCore/SocketAddress.h b/Userland/Libraries/LibCore/SocketAddress.h
index 695fa361aa6df2..87f7d8b63e5aa0 100644
--- a/Userland/Libraries/LibCore/SocketAddress.h
+++ b/Userland/Libraries/LibCore/SocketAddress.h
@@ -110,8 +110,6 @@ class SocketAddress {
     String m_local_address;
 };
 
-const LogStream& operator<<(const LogStream&, const SocketAddress&);
-
 }
 
 template<>
diff --git a/Userland/Libraries/LibCore/SyscallUtils.h b/Userland/Libraries/LibCore/SyscallUtils.h
index 9fd8009c8be0b9..07ca9f0aa4145b 100644
--- a/Userland/Libraries/LibCore/SyscallUtils.h
+++ b/Userland/Libraries/LibCore/SyscallUtils.h
@@ -27,7 +27,6 @@
 #pragma once
 
 #include <AK/Debug.h>
-#include <AK/LogStream.h>
 #include <AK/StdLibExtras.h>
 #include <errno.h>
 #include <string.h>
diff --git a/Userland/Libraries/LibCore/TCPServer.cpp b/Userland/Libraries/LibCore/TCPServer.cpp
index 79fe6f468eb325..3d0cc970253265 100644
--- a/Userland/Libraries/LibCore/TCPServer.cpp
+++ b/Userland/Libraries/LibCore/TCPServer.cpp
@@ -31,6 +31,7 @@
 #include <LibCore/TCPSocket.h>
 #include <stdio.h>
 #include <sys/socket.h>
+#include <unistd.h>
 
 #ifndef SOCK_NONBLOCK
 #    include <fcntl.h>
diff --git a/Userland/Libraries/LibCore/UDPServer.cpp b/Userland/Libraries/LibCore/UDPServer.cpp
index fd68490b7714ab..c92aaec3997c3c 100644
--- a/Userland/Libraries/LibCore/UDPServer.cpp
+++ b/Userland/Libraries/LibCore/UDPServer.cpp
@@ -29,6 +29,7 @@
 #include <LibCore/Notifier.h>
 #include <LibCore/UDPServer.h>
 #include <LibCore/UDPSocket.h>
+#include <errno.h>
 #include <stdio.h>
 #include <unistd.h>
 
diff --git a/Userland/Libraries/LibCpp/AST.cpp b/Userland/Libraries/LibCpp/AST.cpp
index ffb7d6d70bc69e..8c41c596d57530 100644
--- a/Userland/Libraries/LibCpp/AST.cpp
+++ b/Userland/Libraries/LibCpp/AST.cpp
@@ -25,7 +25,6 @@
  */
 
 #include "AST.h"
-#include "AK/LogStream.h"
 
 namespace Cpp {
 
diff --git a/Userland/Libraries/LibCpp/Parser.cpp b/Userland/Libraries/LibCpp/Parser.cpp
index 7bbffe7276458c..6b923d4958051e 100644
--- a/Userland/Libraries/LibCpp/Parser.cpp
+++ b/Userland/Libraries/LibCpp/Parser.cpp
@@ -29,7 +29,6 @@
 #endif
 
 #include "Parser.h"
-#include "AK/LogStream.h"
 #include "AST.h"
 #include <AK/Debug.h>
 #include <AK/ScopeGuard.h>
diff --git a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h
index 753a27c47c146a..77ed86d634cd6f 100644
--- a/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h
+++ b/Userland/Libraries/LibCrypto/BigInt/SignedBigInteger.h
@@ -141,20 +141,6 @@ struct SignedDivisionResult {
 
 }
 
-inline const LogStream&
-operator<<(const LogStream& stream, const Crypto::SignedBigInteger value)
-{
-    if (value.is_invalid()) {
-        stream << "Invalid BigInt";
-        return stream;
-    }
-    if (value.is_negative())
-        stream << "-";
-
-    stream << value.unsigned_value();
-    return stream;
-}
-
 inline Crypto::SignedBigInteger
 operator""_sbigint(const char* string, size_t length)
 {
diff --git a/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h b/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
index becae66749d5c6..51c1d9f7767a9f 100644
--- a/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
+++ b/Userland/Libraries/LibCrypto/BigInt/UnsignedBigInteger.h
@@ -27,7 +27,6 @@
 #pragma once
 
 #include <AK/ByteBuffer.h>
-#include <AK/LogStream.h>
 #include <AK/Span.h>
 #include <AK/String.h>
 #include <AK/Types.h>
@@ -131,19 +130,6 @@ struct UnsignedDivisionResult {
 
 }
 
-inline const LogStream&
-operator<<(const LogStream& stream, const Crypto::UnsignedBigInteger& value)
-{
-    if (value.is_invalid()) {
-        stream << "Invalid BigInt";
-        return stream;
-    }
-    for (int i = value.length() - 1; i >= 0; --i) {
-        stream << value.words()[i] << "|";
-    }
-    return stream;
-}
-
 template<>
 struct AK::Formatter<Crypto::UnsignedBigInteger> : Formatter<StringView> {
     void format(FormatBuilder&, const Crypto::UnsignedBigInteger&);
diff --git a/Userland/Libraries/LibCrypto/Checksum/CRC32.h b/Userland/Libraries/LibCrypto/Checksum/CRC32.h
index df6d17ec164a2c..a3a9b1150e797f 100644
--- a/Userland/Libraries/LibCrypto/Checksum/CRC32.h
+++ b/Userland/Libraries/LibCrypto/Checksum/CRC32.h
@@ -26,7 +26,6 @@
 
 #pragma once
 
-#include <AK/LogStream.h>
 #include <AK/Span.h>
 #include <AK/Types.h>
 #include <LibCrypto/Checksum/ChecksumFunction.h>
diff --git a/Userland/Libraries/LibELF/DynamicLinker.cpp b/Userland/Libraries/LibELF/DynamicLinker.cpp
index 89fa43ac1773a5..a598fe8c56b876 100644
--- a/Userland/Libraries/LibELF/DynamicLinker.cpp
+++ b/Userland/Libraries/LibELF/DynamicLinker.cpp
@@ -30,7 +30,6 @@
 #include <AK/HashMap.h>
 #include <AK/HashTable.h>
 #include <AK/LexicalPath.h>
-#include <AK/LogStream.h>
 #include <AK/NonnullRefPtrVector.h>
 #include <AK/ScopeGuard.h>
 #include <LibC/mman.h>
diff --git a/Userland/Libraries/LibELF/DynamicLoader.cpp b/Userland/Libraries/LibELF/DynamicLoader.cpp
index 682da8642bd3e7..b0190639111aa9 100644
--- a/Userland/Libraries/LibELF/DynamicLoader.cpp
+++ b/Userland/Libraries/LibELF/DynamicLoader.cpp
@@ -40,6 +40,7 @@
 #include <string.h>
 #include <sys/mman.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 #ifndef __serenity__
 static void* mmap_with_name(void* addr, size_t length, int prot, int flags, int fd, off_t offset, const char*)
diff --git a/Userland/Libraries/LibGUI/FileIconProvider.cpp b/Userland/Libraries/LibGUI/FileIconProvider.cpp
index ed585e9dc2b118..a56d6386995dea 100644
--- a/Userland/Libraries/LibGUI/FileIconProvider.cpp
+++ b/Userland/Libraries/LibGUI/FileIconProvider.cpp
@@ -28,7 +28,6 @@
 #include <AK/MappedFile.h>
 #include <AK/String.h>
 #include <LibCore/ConfigFile.h>
-#include <LibCore/DirIterator.h>
 #include <LibCore/File.h>
 #include <LibCore/StandardPaths.h>
 #include <LibELF/Image.h>
@@ -38,6 +37,7 @@
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/PNGLoader.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 namespace GUI {
 
diff --git a/Userland/Libraries/LibGUI/ModelIndex.cpp b/Userland/Libraries/LibGUI/ModelIndex.cpp
index 038974d1d4913b..bde5177596dece 100644
--- a/Userland/Libraries/LibGUI/ModelIndex.cpp
+++ b/Userland/Libraries/LibGUI/ModelIndex.cpp
@@ -39,11 +39,4 @@ Variant ModelIndex::data(ModelRole role) const
     return model()->data(*this, role);
 }
 
-const LogStream& operator<<(const LogStream& stream, const ModelIndex& value)
-{
-    if (value.internal_data())
-        return stream << String::formatted("ModelIndex({},{},{:p})", value.row(), value.column(), value.internal_data());
-    return stream << String::formatted("ModelIndex({},{})", value.row(), value.column());
-}
-
 }
diff --git a/Userland/Libraries/LibGUI/ModelIndex.h b/Userland/Libraries/LibGUI/ModelIndex.h
index 4d6d49a92b6713..9a1ff1d6fda05a 100644
--- a/Userland/Libraries/LibGUI/ModelIndex.h
+++ b/Userland/Libraries/LibGUI/ModelIndex.h
@@ -76,8 +76,6 @@ class ModelIndex {
     void* m_internal_data { nullptr };
 };
 
-const LogStream& operator<<(const LogStream&, const ModelIndex&);
-
 }
 
 namespace AK {
diff --git a/Userland/Libraries/LibGUI/TextPosition.h b/Userland/Libraries/LibGUI/TextPosition.h
index 47ccc71e47e9a9..c744307d933d9d 100644
--- a/Userland/Libraries/LibGUI/TextPosition.h
+++ b/Userland/Libraries/LibGUI/TextPosition.h
@@ -26,7 +26,6 @@
 
 #pragma once
 
-#include <AK/LogStream.h>
 #include <AK/String.h>
 
 namespace GUI {
@@ -57,13 +56,6 @@ class TextPosition {
     size_t m_column { 0xffffffff };
 };
 
-inline const LogStream& operator<<(const LogStream& stream, const TextPosition& value)
-{
-    if (!value.is_valid())
-        return stream << "GUI::TextPosition(Invalid)";
-    return stream << String::formatted("({},{})", value.line(), value.column());
-}
-
 }
 
 template<>
diff --git a/Userland/Libraries/LibGUI/TextRange.h b/Userland/Libraries/LibGUI/TextRange.h
index ea6918c0f49237..55e5378d521afd 100644
--- a/Userland/Libraries/LibGUI/TextRange.h
+++ b/Userland/Libraries/LibGUI/TextRange.h
@@ -26,7 +26,6 @@
 
 #pragma once
 
-#include <AK/LogStream.h>
 #include <LibGUI/TextPosition.h>
 
 namespace GUI {
@@ -85,13 +84,6 @@ class TextRange {
     TextPosition m_end;
 };
 
-inline const LogStream& operator<<(const LogStream& stream, const TextRange& value)
-{
-    if (!value.is_valid())
-        return stream << "GUI::TextRange(Invalid)";
-    return stream << value.start() << '-' << value.end();
-}
-
 }
 
 template<>
diff --git a/Userland/Libraries/LibGfx/AffineTransform.cpp b/Userland/Libraries/LibGfx/AffineTransform.cpp
index 29236b83f0c38b..0f4bca708e2369 100644
--- a/Userland/Libraries/LibGfx/AffineTransform.cpp
+++ b/Userland/Libraries/LibGfx/AffineTransform.cpp
@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/LogStream.h>
 #include <AK/Optional.h>
 #include <LibGfx/AffineTransform.h>
 #include <LibGfx/Rect.h>
@@ -158,18 +157,4 @@ IntRect AffineTransform::map(const IntRect& rect) const
     return enclosing_int_rect(map(FloatRect(rect)));
 }
 
-const LogStream& operator<<(const LogStream& stream, const AffineTransform& value)
-{
-    if (value.is_identity())
-        return stream << "{ Identity }";
-
-    return stream << "{ "
-                  << value.a() << ", "
-                  << value.b() << ", "
-                  << value.c() << ", "
-                  << value.d() << ", "
-                  << value.e() << ", "
-                  << value.f() << " }";
-}
-
 }
diff --git a/Userland/Libraries/LibGfx/AffineTransform.h b/Userland/Libraries/LibGfx/AffineTransform.h
index 41334eb1388bbf..3155009e91ffe9 100644
--- a/Userland/Libraries/LibGfx/AffineTransform.h
+++ b/Userland/Libraries/LibGfx/AffineTransform.h
@@ -27,7 +27,6 @@
 #pragma once
 
 #include <AK/Forward.h>
-#include <AK/LogStream.h>
 #include <LibGfx/Forward.h>
 
 namespace Gfx {
@@ -76,6 +75,4 @@ class AffineTransform {
     float m_values[6] { 0 };
 };
 
-const LogStream& operator<<(const LogStream&, const AffineTransform&);
-
 }
diff --git a/Userland/Libraries/LibGfx/Color.cpp b/Userland/Libraries/LibGfx/Color.cpp
index 20265dc43fcbd3..482e0bc0ad13b0 100644
--- a/Userland/Libraries/LibGfx/Color.cpp
+++ b/Userland/Libraries/LibGfx/Color.cpp
@@ -328,10 +328,6 @@ Optional<Color> Color::from_string(const StringView& string)
     return Color(r.value(), g.value(), b.value(), a.value());
 }
 
-const LogStream& operator<<(const LogStream& stream, Color value)
-{
-    return stream << value.to_string();
-}
 }
 
 bool IPC::encode(IPC::Encoder& encoder, const Color& color)
diff --git a/Userland/Libraries/LibGfx/Color.h b/Userland/Libraries/LibGfx/Color.h
index 671c8caf5d9b01..befaa2ed7703ef 100644
--- a/Userland/Libraries/LibGfx/Color.h
+++ b/Userland/Libraries/LibGfx/Color.h
@@ -404,8 +404,6 @@ inline constexpr Color::Color(NamedColor named)
     m_value = 0xff000000 | (rgb.r << 16) | (rgb.g << 8) | rgb.b;
 }
 
-const LogStream& operator<<(const LogStream&, Color);
-
 }
 
 using Gfx::Color;
diff --git a/Userland/Libraries/LibGfx/Path.h b/Userland/Libraries/LibGfx/Path.h
index 81ebf2ccfbba35..0baf79e308705e 100644
--- a/Userland/Libraries/LibGfx/Path.h
+++ b/Userland/Libraries/LibGfx/Path.h
@@ -212,9 +212,4 @@ class Path {
     Optional<Gfx::FloatRect> m_bounding_box;
 };
 
-inline const LogStream& operator<<(const LogStream& stream, const Path& path)
-{
-    return stream << path.to_string();
-}
-
 }
diff --git a/Userland/Libraries/LibGfx/Point.h b/Userland/Libraries/LibGfx/Point.h
index be6a71e14922b4..526cbf62790744 100644
--- a/Userland/Libraries/LibGfx/Point.h
+++ b/Userland/Libraries/LibGfx/Point.h
@@ -228,12 +228,6 @@ class Point {
     T m_y { 0 };
 };
 
-template<typename T>
-const LogStream& operator<<(const LogStream& stream, const Point<T>& point)
-{
-    return stream << point.to_string();
-}
-
 using IntPoint = Point<int>;
 using FloatPoint = Point<float>;
 
diff --git a/Userland/Libraries/LibGfx/Rect.h b/Userland/Libraries/LibGfx/Rect.h
index 082b1f78008c89..4cba04fff0e090 100644
--- a/Userland/Libraries/LibGfx/Rect.h
+++ b/Userland/Libraries/LibGfx/Rect.h
@@ -478,12 +478,6 @@ class Rect {
     Size<T> m_size;
 };
 
-template<typename T>
-const LogStream& operator<<(const LogStream& stream, const Rect<T>& rect)
-{
-    return stream << rect.to_string();
-}
-
 using IntRect = Rect<int>;
 using FloatRect = Rect<float>;
 
diff --git a/Userland/Libraries/LibGfx/Size.h b/Userland/Libraries/LibGfx/Size.h
index 67321a4a2da683..fd45dd51fbdadb 100644
--- a/Userland/Libraries/LibGfx/Size.h
+++ b/Userland/Libraries/LibGfx/Size.h
@@ -150,12 +150,6 @@ class Size {
     T m_height { 0 };
 };
 
-template<typename T>
-const LogStream& operator<<(const LogStream& stream, const Gfx::Size<T>& size)
-{
-    return stream << size.to_string();
-}
-
 using IntSize = Size<int>;
 using FloatSize = Size<float>;
 
diff --git a/Userland/Libraries/LibGfx/Triangle.cpp b/Userland/Libraries/LibGfx/Triangle.cpp
index d326b59f1c1528..d45bea096b1844 100644
--- a/Userland/Libraries/LibGfx/Triangle.cpp
+++ b/Userland/Libraries/LibGfx/Triangle.cpp
@@ -34,9 +34,4 @@ String Triangle::to_string() const
     return String::formatted("({},{},{})", m_a, m_b, m_c);
 }
 
-const LogStream& operator<<(const LogStream& stream, const Triangle& value)
-{
-    return stream << value.to_string();
-}
-
 }
diff --git a/Userland/Libraries/LibGfx/Triangle.h b/Userland/Libraries/LibGfx/Triangle.h
index 7d8e69e80d803c..294a7f914d290b 100644
--- a/Userland/Libraries/LibGfx/Triangle.h
+++ b/Userland/Libraries/LibGfx/Triangle.h
@@ -76,6 +76,4 @@ class Triangle {
     IntPoint m_c;
 };
 
-const LogStream& operator<<(const LogStream&, const Triangle&);
-
 }
diff --git a/Userland/Libraries/LibLine/Editor.cpp b/Userland/Libraries/LibLine/Editor.cpp
index 15ec22f05d01c0..aa92c3c73d43ea 100644
--- a/Userland/Libraries/LibLine/Editor.cpp
+++ b/Userland/Libraries/LibLine/Editor.cpp
@@ -30,6 +30,7 @@
 #include <AK/GenericLexer.h>
 #include <AK/JsonObject.h>
 #include <AK/ScopeGuard.h>
+#include <AK/ScopedValueRollback.h>
 #include <AK/StringBuilder.h>
 #include <AK/Utf32View.h>
 #include <AK/Utf8View.h>
@@ -39,6 +40,7 @@
 #include <LibCore/File.h>
 #include <LibCore/Notifier.h>
 #include <ctype.h>
+#include <errno.h>
 #include <signal.h>
 #include <stdio.h>
 #include <sys/ioctl.h>
diff --git a/Userland/Libraries/LibLine/InternalFunctions.cpp b/Userland/Libraries/LibLine/InternalFunctions.cpp
index 162e01dbee79a0..015754c0b05b78 100644
--- a/Userland/Libraries/LibLine/InternalFunctions.cpp
+++ b/Userland/Libraries/LibLine/InternalFunctions.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ScopedValueRollback.h>
 #include <AK/StringBuilder.h>
 #include <AK/TemporaryChange.h>
 #include <LibLine/Editor.h>
diff --git a/Userland/Libraries/LibRegex/RegexLexer.cpp b/Userland/Libraries/LibRegex/RegexLexer.cpp
index c7bd1194c5a3d7..8b0b155da31c7b 100644
--- a/Userland/Libraries/LibRegex/RegexLexer.cpp
+++ b/Userland/Libraries/LibRegex/RegexLexer.cpp
@@ -27,7 +27,6 @@
 #include "RegexLexer.h"
 #include <AK/Assertions.h>
 #include <AK/Debug.h>
-#include <AK/LogStream.h>
 #include <stdio.h>
 
 namespace regex {
diff --git a/Userland/Libraries/LibTLS/TLSv12.cpp b/Userland/Libraries/LibTLS/TLSv12.cpp
index 587996f662b0ed..6b61234b3039e8 100644
--- a/Userland/Libraries/LibTLS/TLSv12.cpp
+++ b/Userland/Libraries/LibTLS/TLSv12.cpp
@@ -33,6 +33,7 @@
 #include <LibCrypto/ASN1/PEM.h>
 #include <LibCrypto/PK/Code/EMSA_PSS.h>
 #include <LibTLS/TLSv12.h>
+#include <errno.h>
 
 #ifndef SOCK_NONBLOCK
 #    include <sys/ioctl.h>
diff --git a/Userland/Libraries/LibTTF/Font.cpp b/Userland/Libraries/LibTTF/Font.cpp
index 03c6c92cdd77da..67c85a776771ef 100644
--- a/Userland/Libraries/LibTTF/Font.cpp
+++ b/Userland/Libraries/LibTTF/Font.cpp
@@ -26,7 +26,6 @@
 
 #include "AK/ByteBuffer.h"
 #include <AK/Checked.h>
-#include <AK/LogStream.h>
 #include <AK/Utf32View.h>
 #include <AK/Utf8View.h>
 #include <LibCore/File.h>
diff --git a/Userland/Libraries/LibTar/TarStream.cpp b/Userland/Libraries/LibTar/TarStream.cpp
index 30654dc607e828..ca4f60ada311d9 100644
--- a/Userland/Libraries/LibTar/TarStream.cpp
+++ b/Userland/Libraries/LibTar/TarStream.cpp
@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/LogStream.h>
 #include <LibTar/TarStream.h>
 
 namespace Tar {
diff --git a/Userland/Libraries/LibWeb/CSS/Length.h b/Userland/Libraries/LibWeb/CSS/Length.h
index 78ee24f5de4aed..322d741227df7c 100644
--- a/Userland/Libraries/LibWeb/CSS/Length.h
+++ b/Userland/Libraries/LibWeb/CSS/Length.h
@@ -173,9 +173,4 @@ class Length {
     float m_value { 0 };
 };
 
-inline const LogStream& operator<<(const LogStream& stream, const Length& value)
-{
-    return stream << value.to_string();
-}
-
 }
diff --git a/Userland/Libraries/LibWeb/DumpLayoutTree/main.cpp b/Userland/Libraries/LibWeb/DumpLayoutTree/main.cpp
index 2ce6a6bd7135bb..10fe41f64a3af6 100644
--- a/Userland/Libraries/LibWeb/DumpLayoutTree/main.cpp
+++ b/Userland/Libraries/LibWeb/DumpLayoutTree/main.cpp
@@ -30,6 +30,7 @@
 #include <LibWeb/Dump.h>
 #include <LibWeb/InProcessWebView.h>
 #include <LibWeb/Layout/InitialContainingBlockBox.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/MenuApplets/ClipboardHistory/main.cpp b/Userland/MenuApplets/ClipboardHistory/main.cpp
index 62752967451fdc..f6f596cd535db5 100644
--- a/Userland/MenuApplets/ClipboardHistory/main.cpp
+++ b/Userland/MenuApplets/ClipboardHistory/main.cpp
@@ -32,6 +32,7 @@
 #include <LibGUI/TableView.h>
 #include <LibGUI/Window.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char* argv[])
 {
diff --git a/Userland/MenuApplets/UserName/main.cpp b/Userland/MenuApplets/UserName/main.cpp
index ac841ae21b2306..138d2bbc929e38 100644
--- a/Userland/MenuApplets/UserName/main.cpp
+++ b/Userland/MenuApplets/UserName/main.cpp
@@ -28,10 +28,10 @@
 #include <LibGUI/Painter.h>
 #include <LibGUI/Widget.h>
 #include <LibGUI/Window.h>
-#include <LibGfx/Font.h>
 #include <LibGfx/FontDatabase.h>
 #include <LibGfx/Palette.h>
 #include <stdio.h>
+#include <unistd.h>
 
 class UserNameWidget final : public GUI::Widget {
     C_OBJECT(UserNameWidget)
diff --git a/Userland/Services/ChessEngine/main.cpp b/Userland/Services/ChessEngine/main.cpp
index 14d7b729a111cf..aac15d7f714050 100644
--- a/Userland/Services/ChessEngine/main.cpp
+++ b/Userland/Services/ChessEngine/main.cpp
@@ -27,6 +27,7 @@
 #include "ChessEngine.h"
 #include <LibCore/EventLoop.h>
 #include <LibCore/File.h>
+#include <unistd.h>
 
 int main()
 {
diff --git a/Userland/Services/DHCPClient/main.cpp b/Userland/Services/DHCPClient/main.cpp
index 722cee2b2db7c0..8def7ec95472c7 100644
--- a/Userland/Services/DHCPClient/main.cpp
+++ b/Userland/Services/DHCPClient/main.cpp
@@ -35,6 +35,7 @@
 #include <LibCore/LocalServer.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 static u8 mac_part(const Vector<String>& parts, size_t index)
 {
diff --git a/Userland/Services/EchoServer/main.cpp b/Userland/Services/EchoServer/main.cpp
index a4136c3df6c54c..188240bbfa0ce9 100644
--- a/Userland/Services/EchoServer/main.cpp
+++ b/Userland/Services/EchoServer/main.cpp
@@ -30,9 +30,9 @@
 #include <LibCore/ArgsParser.h>
 #include <LibCore/EventLoop.h>
 #include <LibCore/TCPServer.h>
-#include <LibCore/TCPSocket.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Services/LookupServer/main.cpp b/Userland/Services/LookupServer/main.cpp
index 4d566ca8a9c2eb..855f825a694388 100644
--- a/Userland/Services/LookupServer/main.cpp
+++ b/Userland/Services/LookupServer/main.cpp
@@ -28,6 +28,7 @@
 #include <LibCore/EventLoop.h>
 #include <LibCore/LocalServer.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main([[maybe_unused]] int argc, [[maybe_unused]] char** argv)
 {
diff --git a/Userland/Services/ProtocolServer/Protocol.cpp b/Userland/Services/ProtocolServer/Protocol.cpp
index de4a4e8a497250..8ff46138e65162 100644
--- a/Userland/Services/ProtocolServer/Protocol.cpp
+++ b/Userland/Services/ProtocolServer/Protocol.cpp
@@ -26,8 +26,10 @@
 
 #include <AK/HashMap.h>
 #include <ProtocolServer/Protocol.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <string.h>
+#include <unistd.h>
 
 namespace ProtocolServer {
 
diff --git a/Userland/Services/Taskbar/main.cpp b/Userland/Services/Taskbar/main.cpp
index e6ee5d2b256521..f86c0a114b0383 100644
--- a/Userland/Services/Taskbar/main.cpp
+++ b/Userland/Services/Taskbar/main.cpp
@@ -30,6 +30,7 @@
 #include <signal.h>
 #include <stdio.h>
 #include <sys/wait.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Services/TelnetServer/main.cpp b/Userland/Services/TelnetServer/main.cpp
index 3adda4b83a80ad..ed7b7786472073 100644
--- a/Userland/Services/TelnetServer/main.cpp
+++ b/Userland/Services/TelnetServer/main.cpp
@@ -27,9 +27,7 @@
 #include "Client.h"
 #include <AK/ByteBuffer.h>
 #include <AK/HashMap.h>
-#include <AK/IPv4Address.h>
 #include <AK/String.h>
-#include <AK/StringBuilder.h>
 #include <AK/Types.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/EventLoop.h>
@@ -39,6 +37,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <sys/ioctl.h>
+#include <unistd.h>
 
 static void run_command(int ptm_fd, String command)
 {
diff --git a/Userland/Services/WindowServer/WindowManager.cpp b/Userland/Services/WindowServer/WindowManager.cpp
index e86f204da810b6..1a9e46dee4ce4c 100644
--- a/Userland/Services/WindowServer/WindowManager.cpp
+++ b/Userland/Services/WindowServer/WindowManager.cpp
@@ -32,7 +32,6 @@
 #include "MenuItem.h"
 #include "Screen.h"
 #include "Window.h"
-#include <AK/LogStream.h>
 #include <AK/StdLibExtras.h>
 #include <AK/Vector.h>
 #include <LibGfx/Bitmap.h>
diff --git a/Userland/Services/WindowServer/main.cpp b/Userland/Services/WindowServer/main.cpp
index 6e5898f27cb252..28957ac75a8081 100644
--- a/Userland/Services/WindowServer/main.cpp
+++ b/Userland/Services/WindowServer/main.cpp
@@ -35,6 +35,7 @@
 #include <signal.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 int main(int, char**)
 {
diff --git a/Userland/Shell/AST.cpp b/Userland/Shell/AST.cpp
index e53c2151c1a407..02c873e2416370 100644
--- a/Userland/Shell/AST.cpp
+++ b/Userland/Shell/AST.cpp
@@ -28,13 +28,16 @@
 #include "Shell.h"
 #include <AK/MemoryStream.h>
 #include <AK/ScopeGuard.h>
+#include <AK/ScopedValueRollback.h>
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <AK/URL.h>
 #include <LibCore/EventLoop.h>
 #include <LibCore/File.h>
+#include <errno.h>
 #include <fcntl.h>
 #include <signal.h>
+#include <unistd.h>
 
 void AK::Formatter<Shell::AST::Command>::format(FormatBuilder& builder, const Shell::AST::Command& value)
 {
diff --git a/Userland/Shell/Builtin.cpp b/Userland/Shell/Builtin.cpp
index 1eada403649d8c..1c79d056e669c3 100644
--- a/Userland/Shell/Builtin.cpp
+++ b/Userland/Shell/Builtin.cpp
@@ -31,6 +31,7 @@
 #include <LibCore/ArgsParser.h>
 #include <LibCore/EventLoop.h>
 #include <LibCore/File.h>
+#include <errno.h>
 #include <inttypes.h>
 #include <signal.h>
 #include <sys/wait.h>
diff --git a/Userland/Shell/Formatter.cpp b/Userland/Shell/Formatter.cpp
index 43f69340117903..2d7e0908d588f5 100644
--- a/Userland/Shell/Formatter.cpp
+++ b/Userland/Shell/Formatter.cpp
@@ -27,6 +27,7 @@
 #include "Formatter.h"
 #include "AST.h"
 #include "Parser.h"
+#include <AK/ScopedValueRollback.h>
 #include <AK/TemporaryChange.h>
 
 namespace Shell {
diff --git a/Userland/Shell/Parser.cpp b/Userland/Shell/Parser.cpp
index ab00dee599f37a..c821400eb1b672 100644
--- a/Userland/Shell/Parser.cpp
+++ b/Userland/Shell/Parser.cpp
@@ -27,6 +27,7 @@
 #include "Parser.h"
 #include "Shell.h"
 #include <AK/AllOf.h>
+#include <AK/ScopedValueRollback.h>
 #include <AK/TemporaryChange.h>
 #include <ctype.h>
 #include <stdio.h>
diff --git a/Userland/Shell/Shell.cpp b/Userland/Shell/Shell.cpp
index 2273482d12f35d..8459593fa8eb0b 100644
--- a/Userland/Shell/Shell.cpp
+++ b/Userland/Shell/Shell.cpp
@@ -31,6 +31,7 @@
 #include <AK/Function.h>
 #include <AK/LexicalPath.h>
 #include <AK/ScopeGuard.h>
+#include <AK/ScopedValueRollback.h>
 #include <AK/StringBuilder.h>
 #include <AK/TemporaryChange.h>
 #include <LibCore/ArgsParser.h>
diff --git a/Userland/Shell/SyntaxHighlighter.cpp b/Userland/Shell/SyntaxHighlighter.cpp
index c0f89613a4c1ee..eade3172088f85 100644
--- a/Userland/Shell/SyntaxHighlighter.cpp
+++ b/Userland/Shell/SyntaxHighlighter.cpp
@@ -24,6 +24,7 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
+#include <AK/ScopedValueRollback.h>
 #include <AK/TemporaryChange.h>
 #include <LibGUI/TextEditor.h>
 #include <LibGfx/Font.h>
diff --git a/Userland/Shell/main.cpp b/Userland/Shell/main.cpp
index 581edd93c1465b..d5eb1bcbb0f6be 100644
--- a/Userland/Shell/main.cpp
+++ b/Userland/Shell/main.cpp
@@ -24,16 +24,17 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include "Execution.h"
 #include "Shell.h"
 #include <LibCore/ArgsParser.h>
 #include <LibCore/Event.h>
 #include <LibCore/EventLoop.h>
 #include <LibCore/File.h>
+#include <errno.h>
 #include <signal.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 RefPtr<Line::Editor> editor;
 Shell::Shell* s_shell;
diff --git a/Userland/Tests/Kernel/kill-pidtid-confusion.cpp b/Userland/Tests/Kernel/kill-pidtid-confusion.cpp
index 0357ccdd235820..e0fe32d414cb5d 100644
--- a/Userland/Tests/Kernel/kill-pidtid-confusion.cpp
+++ b/Userland/Tests/Kernel/kill-pidtid-confusion.cpp
@@ -25,11 +25,11 @@
  */
 
 #include <AK/Assertions.h>
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <LibPthread/pthread.h>
-#include <fcntl.h>
 #include <signal.h>
 #include <stdio.h>
+#include <stdlib.h>
 #include <unistd.h>
 
 /*
diff --git a/Userland/Tests/Kernel/setpgid-across-sessions-without-leader.cpp b/Userland/Tests/Kernel/setpgid-across-sessions-without-leader.cpp
index d13b83a4787d13..540b39d6d3c9b5 100644
--- a/Userland/Tests/Kernel/setpgid-across-sessions-without-leader.cpp
+++ b/Userland/Tests/Kernel/setpgid-across-sessions-without-leader.cpp
@@ -25,7 +25,7 @@
  */
 
 #include <AK/Assertions.h>
-#include <AK/LogStream.h>
+#include <AK/Format.h>
 #include <fcntl.h>
 #include <serenity.h>
 #include <stdio.h>
diff --git a/Userland/Tests/LibGfx/font.cpp b/Userland/Tests/LibGfx/font.cpp
index a52e6c85eb47b4..b4dfd692b4d0c8 100644
--- a/Userland/Tests/LibGfx/font.cpp
+++ b/Userland/Tests/LibGfx/font.cpp
@@ -28,7 +28,7 @@
 #include <LibGfx/FontDatabase.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
+#include <unistd.h>
 
 static void test_fontdatabase_get_by_name()
 {
diff --git a/Userland/Utilities/adjtime.cpp b/Userland/Utilities/adjtime.cpp
index 810421bc983ecb..5f764f37c67592 100644
--- a/Userland/Utilities/adjtime.cpp
+++ b/Userland/Utilities/adjtime.cpp
@@ -27,6 +27,7 @@
 #include <LibCore/ArgsParser.h>
 #include <math.h>
 #include <sys/time.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/base64.cpp b/Userland/Utilities/base64.cpp
index 030990c286aa73..b973b3e7dcf66f 100644
--- a/Userland/Utilities/base64.cpp
+++ b/Userland/Utilities/base64.cpp
@@ -26,12 +26,11 @@
 
 #include <AK/Base64.h>
 #include <AK/ByteBuffer.h>
-#include <AK/String.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/File.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/basename.cpp b/Userland/Utilities/basename.cpp
index 65862f1072fdab..5152ff847e77ea 100644
--- a/Userland/Utilities/basename.cpp
+++ b/Userland/Utilities/basename.cpp
@@ -27,6 +27,7 @@
 #include <AK/LexicalPath.h>
 #include <LibCore/ArgsParser.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/bt.cpp b/Userland/Utilities/bt.cpp
index ea6f7fde7dc47d..c2c5f1161a334a 100644
--- a/Userland/Utilities/bt.cpp
+++ b/Userland/Utilities/bt.cpp
@@ -25,7 +25,6 @@
  */
 
 #include <AK/LexicalPath.h>
-#include <AK/LogStream.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/EventLoop.h>
 #include <LibCore/File.h>
diff --git a/Userland/Utilities/copy.cpp b/Userland/Utilities/copy.cpp
index 22957038255803..2ddeed72df7325 100644
--- a/Userland/Utilities/copy.cpp
+++ b/Userland/Utilities/copy.cpp
@@ -31,8 +31,7 @@
 #include <LibCore/File.h>
 #include <LibGUI/Application.h>
 #include <LibGUI/Clipboard.h>
-#include <stdio.h>
-#include <stdlib.h>
+#include <unistd.h>
 
 struct Options {
     String data;
diff --git a/Userland/Utilities/crash.cpp b/Userland/Utilities/crash.cpp
index 1aacf79aa35307..cf815442d52fce 100644
--- a/Userland/Utilities/crash.cpp
+++ b/Userland/Utilities/crash.cpp
@@ -34,6 +34,7 @@
 #include <sys/mman.h>
 #include <sys/wait.h>
 #include <syscall.h>
+#include <unistd.h>
 
 #pragma GCC optimize("O0")
 
diff --git a/Userland/Utilities/date.cpp b/Userland/Utilities/date.cpp
index 057112a4c35456..2be2adc29f05d1 100644
--- a/Userland/Utilities/date.cpp
+++ b/Userland/Utilities/date.cpp
@@ -24,13 +24,12 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/Optional.h>
 #include <AK/String.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/DateTime.h>
 #include <stdio.h>
-#include <string.h>
 #include <time.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/ddate.cpp b/Userland/Utilities/ddate.cpp
index 763a5a349304b3..8018365a9b7f48 100644
--- a/Userland/Utilities/ddate.cpp
+++ b/Userland/Utilities/ddate.cpp
@@ -27,6 +27,7 @@
 #include <AK/String.h>
 #include <LibCore/DateTime.h>
 #include <stdio.h>
+#include <unistd.h>
 
 class DiscordianDate {
 public:
diff --git a/Userland/Utilities/disasm.cpp b/Userland/Utilities/disasm.cpp
index 5f65c484bedb4e..b1dac221291be3 100644
--- a/Userland/Utilities/disasm.cpp
+++ b/Userland/Utilities/disasm.cpp
@@ -25,7 +25,6 @@
  */
 
 #include <AK/Debug.h>
-#include <AK/LogStream.h>
 #include <AK/MappedFile.h>
 #include <AK/QuickSort.h>
 #include <AK/Vector.h>
@@ -33,7 +32,6 @@
 #include <LibELF/Image.h>
 #include <LibX86/Disassembler.h>
 #include <LibX86/ELFSymbolProvider.h>
-#include <stdio.h>
 #include <string.h>
 
 int main(int argc, char** argv)
diff --git a/Userland/Utilities/expr.cpp b/Userland/Utilities/expr.cpp
index f96a67c8fa94c4..42df5c578513aa 100644
--- a/Userland/Utilities/expr.cpp
+++ b/Userland/Utilities/expr.cpp
@@ -25,7 +25,6 @@
  */
 
 #include <AK/GenericLexer.h>
-#include <AK/LogStream.h>
 #include <AK/NonnullOwnPtr.h>
 #include <AK/OwnPtr.h>
 #include <AK/Queue.h>
diff --git a/Userland/Utilities/fortune.cpp b/Userland/Utilities/fortune.cpp
index cbd1ee33155695..e911b2a6edac0e 100644
--- a/Userland/Utilities/fortune.cpp
+++ b/Userland/Utilities/fortune.cpp
@@ -35,6 +35,7 @@
 #include <LibCore/File.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 class Quote {
 public:
diff --git a/Userland/Utilities/functrace.cpp b/Userland/Utilities/functrace.cpp
index 8cad0b6c8cf0bd..1bcbdcbbdb4475 100644
--- a/Userland/Utilities/functrace.cpp
+++ b/Userland/Utilities/functrace.cpp
@@ -28,7 +28,6 @@
 #include <AK/ByteBuffer.h>
 #include <AK/Demangle.h>
 #include <AK/HashMap.h>
-#include <AK/LogStream.h>
 #include <AK/NonnullOwnPtr.h>
 #include <AK/StringBuilder.h>
 #include <LibC/sys/arch/i386/regs.h>
diff --git a/Userland/Utilities/gml-format.cpp b/Userland/Utilities/gml-format.cpp
index 79ce530a327d17..cc72fffa7dd242 100644
--- a/Userland/Utilities/gml-format.cpp
+++ b/Userland/Utilities/gml-format.cpp
@@ -27,6 +27,7 @@
 #include <LibCore/ArgsParser.h>
 #include <LibCore/File.h>
 #include <LibGUI/GMLFormatter.h>
+#include <unistd.h>
 
 bool format_file(const StringView&, bool);
 
diff --git a/Userland/Utilities/gron.cpp b/Userland/Utilities/gron.cpp
index 38359d515dad5f..5f529b76cbd78c 100644
--- a/Userland/Utilities/gron.cpp
+++ b/Userland/Utilities/gron.cpp
@@ -32,6 +32,7 @@
 #include <LibCore/File.h>
 #include <stdio.h>
 #include <string.h>
+#include <unistd.h>
 
 static bool use_color = false;
 static void print(const String& name, const JsonValue&, Vector<String>& trail);
diff --git a/Userland/Utilities/gunzip.cpp b/Userland/Utilities/gunzip.cpp
index 8898cbae158428..4f98f67b8e9565 100644
--- a/Userland/Utilities/gunzip.cpp
+++ b/Userland/Utilities/gunzip.cpp
@@ -27,6 +27,7 @@
 #include <LibCompress/Gzip.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/FileStream.h>
+#include <unistd.h>
 
 static void decompress_file(Buffered<Core::InputFileStream>& input_stream, Buffered<Core::OutputFileStream>& output_stream)
 {
diff --git a/Userland/Utilities/head.cpp b/Userland/Utilities/head.cpp
index 132df61ee6550d..8ee9d050f180bd 100644
--- a/Userland/Utilities/head.cpp
+++ b/Userland/Utilities/head.cpp
@@ -28,8 +28,8 @@
 #include <LibCore/ArgsParser.h>
 #include <errno.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 int head(const String& filename, bool print_filename, int line_count, int char_count);
 
diff --git a/Userland/Utilities/hexdump.cpp b/Userland/Utilities/hexdump.cpp
index a4c4b04cb8e191..4547ceaa30f5cf 100644
--- a/Userland/Utilities/hexdump.cpp
+++ b/Userland/Utilities/hexdump.cpp
@@ -25,7 +25,6 @@
  */
 
 #include <AK/ByteBuffer.h>
-#include <AK/LogStream.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/File.h>
 #include <ctype.h>
diff --git a/Userland/Utilities/html.cpp b/Userland/Utilities/html.cpp
index b6e25244748398..ec4da58e4e53cb 100644
--- a/Userland/Utilities/html.cpp
+++ b/Userland/Utilities/html.cpp
@@ -35,6 +35,7 @@
 #include <LibGfx/Bitmap.h>
 #include <LibWeb/OutOfProcessWebView.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/ini.cpp b/Userland/Utilities/ini.cpp
index 5ac2c445a3e697..72d8f76f3a1ac4 100644
--- a/Userland/Utilities/ini.cpp
+++ b/Userland/Utilities/ini.cpp
@@ -28,6 +28,7 @@
 #include <LibCore/ConfigFile.h>
 #include <LibCore/File.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/js.cpp b/Userland/Utilities/js.cpp
index 2601ccf5c4b9ed..659c5b8c8b1a84 100644
--- a/Userland/Utilities/js.cpp
+++ b/Userland/Utilities/js.cpp
@@ -58,6 +58,7 @@
 #include <fcntl.h>
 #include <signal.h>
 #include <stdio.h>
+#include <unistd.h>
 
 RefPtr<JS::VM> vm;
 Vector<String> repl_statements;
diff --git a/Userland/Utilities/lsirq.cpp b/Userland/Utilities/lsirq.cpp
index 82402cc1b81ee9..48cf0a9ed3ac3a 100644
--- a/Userland/Utilities/lsirq.cpp
+++ b/Userland/Utilities/lsirq.cpp
@@ -27,9 +27,9 @@
 #include <AK/ByteBuffer.h>
 #include <AK/JsonArray.h>
 #include <AK/JsonObject.h>
-#include <AK/String.h>
 #include <LibCore/File.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main([[maybe_unused]] int argc, [[maybe_unused]] char** argv)
 {
diff --git a/Userland/Utilities/lspci.cpp b/Userland/Utilities/lspci.cpp
index 1055935c2e2ea6..e54e01c2e54595 100644
--- a/Userland/Utilities/lspci.cpp
+++ b/Userland/Utilities/lspci.cpp
@@ -32,6 +32,7 @@
 #include <LibCore/File.h>
 #include <LibPCIDB/Database.h>
 #include <stdio.h>
+#include <unistd.h>
 
 static bool flag_show_numerical = false;
 
diff --git a/Userland/Utilities/misbehaving-application.cpp b/Userland/Utilities/misbehaving-application.cpp
index cee1ccab1cfce6..1517b9559765df 100644
--- a/Userland/Utilities/misbehaving-application.cpp
+++ b/Userland/Utilities/misbehaving-application.cpp
@@ -26,7 +26,7 @@
 
 #include <LibCore/EventLoop.h>
 #include <LibCore/Timer.h>
-#include <stdio.h>
+#include <unistd.h>
 
 int main(int, char**)
 {
diff --git a/Userland/Utilities/mktemp.cpp b/Userland/Utilities/mktemp.cpp
index c1b627ffca7e51..3b6b962690f619 100644
--- a/Userland/Utilities/mktemp.cpp
+++ b/Userland/Utilities/mktemp.cpp
@@ -29,6 +29,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 constexpr const char* default_template = "tmp.XXXXXXXXXX";
 
diff --git a/Userland/Utilities/mv.cpp b/Userland/Utilities/mv.cpp
index 2e7973f84fa657..41e3b5025d7d3b 100644
--- a/Userland/Utilities/mv.cpp
+++ b/Userland/Utilities/mv.cpp
@@ -30,6 +30,7 @@
 #include <LibCore/File.h>
 #include <stdio.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/pmap.cpp b/Userland/Utilities/pmap.cpp
index b752ecb3cb4404..53fd6016e8a0a8 100644
--- a/Userland/Utilities/pmap.cpp
+++ b/Userland/Utilities/pmap.cpp
@@ -31,6 +31,7 @@
 #include <LibCore/ArgsParser.h>
 #include <LibCore/File.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/readelf.cpp b/Userland/Utilities/readelf.cpp
index 08bd2e66076f29..c778a408a74fb1 100644
--- a/Userland/Utilities/readelf.cpp
+++ b/Userland/Utilities/readelf.cpp
@@ -33,6 +33,7 @@
 #include <LibELF/Validation.h>
 #include <ctype.h>
 #include <stdio.h>
+#include <unistd.h>
 
 static const char* object_file_type_to_string(Elf32_Half type)
 {
diff --git a/Userland/Utilities/readlink.cpp b/Userland/Utilities/readlink.cpp
index de65e6212a4e33..7edb372a19b861 100644
--- a/Userland/Utilities/readlink.cpp
+++ b/Userland/Utilities/readlink.cpp
@@ -27,6 +27,7 @@
 #include <LibCore/ArgsParser.h>
 #include <LibCore/File.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/shuf.cpp b/Userland/Utilities/shuf.cpp
index 953323f5a0a707..9a80f1cb1074d5 100644
--- a/Userland/Utilities/shuf.cpp
+++ b/Userland/Utilities/shuf.cpp
@@ -29,7 +29,7 @@
 #include <errno.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
+#include <unistd.h>
 
 int main([[maybe_unused]] int argc, [[maybe_unused]] char** argv)
 {
diff --git a/Userland/Utilities/sort.cpp b/Userland/Utilities/sort.cpp
index 34b528f96b069e..06d0b4ead43a47 100644
--- a/Userland/Utilities/sort.cpp
+++ b/Userland/Utilities/sort.cpp
@@ -31,6 +31,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 int main([[maybe_unused]] int argc, [[maybe_unused]] char** argv)
 {
diff --git a/Userland/Utilities/strace.cpp b/Userland/Utilities/strace.cpp
index c43f987e519eae..36188ba098e789 100644
--- a/Userland/Utilities/strace.cpp
+++ b/Userland/Utilities/strace.cpp
@@ -25,7 +25,6 @@
  */
 
 #include <AK/Assertions.h>
-#include <AK/LogStream.h>
 #include <AK/Types.h>
 #include <LibC/sys/arch/i386/regs.h>
 #include <LibCore/ArgsParser.h>
diff --git a/Userland/Utilities/syscall.cpp b/Userland/Utilities/syscall.cpp
index f5275f75be05de..381cc534be567c 100644
--- a/Userland/Utilities/syscall.cpp
+++ b/Userland/Utilities/syscall.cpp
@@ -26,7 +26,6 @@
 
 #include <AK/Debug.h>
 #include <AK/Iterator.h>
-#include <AK/LogStream.h>
 #include <AK/Vector.h>
 #include <LibCore/ArgsParser.h>
 #include <mman.h>
diff --git a/Userland/Utilities/tar.cpp b/Userland/Utilities/tar.cpp
index a3ce48d49ee818..3e74e0904262c8 100644
--- a/Userland/Utilities/tar.cpp
+++ b/Userland/Utilities/tar.cpp
@@ -24,7 +24,6 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#include <AK/LogStream.h>
 #include <AK/Vector.h>
 #include <LibCompress/Gzip.h>
 #include <LibCore/ArgsParser.h>
@@ -33,6 +32,7 @@
 #include <fcntl.h>
 #include <stdio.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 constexpr size_t buffer_size = 4096;
 
diff --git a/Userland/Utilities/test-bindtodevice.cpp b/Userland/Utilities/test-bindtodevice.cpp
index d96d1e6b29ed4c..d9c4f1c24cc7ce 100644
--- a/Userland/Utilities/test-bindtodevice.cpp
+++ b/Userland/Utilities/test-bindtodevice.cpp
@@ -29,9 +29,9 @@
 #include <net/if.h>
 #include <netinet/in.h>
 #include <stdio.h>
-#include <stdlib.h>
 #include <string.h>
 #include <sys/socket.h>
+#include <unistd.h>
 
 static void test_invalid(int);
 static void test_no_route(int);
diff --git a/Userland/Utilities/test-js.cpp b/Userland/Utilities/test-js.cpp
index fa763a87e43ca9..09ef8a639e7f49 100644
--- a/Userland/Utilities/test-js.cpp
+++ b/Userland/Utilities/test-js.cpp
@@ -29,7 +29,6 @@
 #include <AK/JsonObject.h>
 #include <AK/JsonValue.h>
 #include <AK/LexicalPath.h>
-#include <AK/LogStream.h>
 #include <AK/QuickSort.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/DirIterator.h>
@@ -44,6 +43,7 @@
 #include <signal.h>
 #include <stdlib.h>
 #include <sys/time.h>
+#include <unistd.h>
 
 #define TOP_LEVEL_TEST_NAME "__$$TOP_LEVEL$$__"
 
diff --git a/Userland/Utilities/test-pthread.cpp b/Userland/Utilities/test-pthread.cpp
index ba563674109485..6e2d492e332417 100644
--- a/Userland/Utilities/test-pthread.cpp
+++ b/Userland/Utilities/test-pthread.cpp
@@ -28,6 +28,7 @@
 #include <AK/NonnullRefPtrVector.h>
 #include <LibThread/Thread.h>
 #include <pthread.h>
+#include <unistd.h>
 
 static void test_once()
 {
diff --git a/Userland/Utilities/test_efault.cpp b/Userland/Utilities/test_efault.cpp
index ba46c8f3f0ea46..fe7507c080f79b 100644
--- a/Userland/Utilities/test_efault.cpp
+++ b/Userland/Utilities/test_efault.cpp
@@ -88,9 +88,6 @@ int main(int, char**)
         EXPECT_EFAULT(read, (void*)kernel_address, 1);
     }
 
-    char buffer[4096];
-    EXPECT_EFAULT_NO_FD(dbgputstr, buffer, 0xffffff00);
-
     // Test the page just below where the kernel VM begins.
     u8* jerk_page = (u8*)mmap((void*)(0xc0000000 - PAGE_SIZE), PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_ANONYMOUS | MAP_PRIVATE | MAP_FIXED, 0, 0);
     VERIFY(jerk_page == (void*)(0xc0000000 - PAGE_SIZE));
diff --git a/Userland/Utilities/test_io.cpp b/Userland/Utilities/test_io.cpp
index 404d76f2b96ab5..7384ffa7b8e83f 100644
--- a/Userland/Utilities/test_io.cpp
+++ b/Userland/Utilities/test_io.cpp
@@ -25,7 +25,6 @@
  */
 
 #include <AK/Assertions.h>
-#include <AK/LogStream.h>
 #include <AK/Types.h>
 #include <LibCore/File.h>
 #include <fcntl.h>
diff --git a/Userland/Utilities/tree.cpp b/Userland/Utilities/tree.cpp
index 6fdb2bd9f002d6..7733914d640c67 100644
--- a/Userland/Utilities/tree.cpp
+++ b/Userland/Utilities/tree.cpp
@@ -25,15 +25,16 @@
  */
 
 #include <AK/LexicalPath.h>
-#include <AK/LogStream.h>
 #include <AK/QuickSort.h>
 #include <AK/String.h>
 #include <AK/StringBuilder.h>
 #include <AK/Vector.h>
 #include <LibCore/ArgsParser.h>
 #include <LibCore/DirIterator.h>
+#include <errno.h>
 #include <stdio.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 static bool flag_show_hidden_files = false;
 static bool flag_show_only_directories = false;
diff --git a/Userland/Utilities/uniq.cpp b/Userland/Utilities/uniq.cpp
index 7ace26d21cf4de..118490938ebc51 100644
--- a/Userland/Utilities/uniq.cpp
+++ b/Userland/Utilities/uniq.cpp
@@ -30,6 +30,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 
 struct linebuf {
     char* buf = NULL;
diff --git a/Userland/Utilities/utmpupdate.cpp b/Userland/Utilities/utmpupdate.cpp
index 17db0f568eb6b8..ff9b284c51086a 100644
--- a/Userland/Utilities/utmpupdate.cpp
+++ b/Userland/Utilities/utmpupdate.cpp
@@ -30,6 +30,7 @@
 #include <LibCore/ArgsParser.h>
 #include <LibCore/DateTime.h>
 #include <LibCore/File.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/wc.cpp b/Userland/Utilities/wc.cpp
index cf9fa62d35929c..912820f995717c 100644
--- a/Userland/Utilities/wc.cpp
+++ b/Userland/Utilities/wc.cpp
@@ -31,6 +31,7 @@
 #include <ctype.h>
 #include <stdio.h>
 #include <sys/stat.h>
+#include <unistd.h>
 
 struct Count {
     String name;
diff --git a/Userland/Utilities/which.cpp b/Userland/Utilities/which.cpp
index e902fae2e75586..545addab07e004 100644
--- a/Userland/Utilities/which.cpp
+++ b/Userland/Utilities/which.cpp
@@ -27,6 +27,7 @@
 #include <LibCore/ArgsParser.h>
 #include <LibCore/DirIterator.h>
 #include <stdio.h>
+#include <unistd.h>
 
 int main(int argc, char** argv)
 {
diff --git a/Userland/Utilities/xargs.cpp b/Userland/Utilities/xargs.cpp
index 8bb7efaaa85467..d455e9b897b302 100644
--- a/Userland/Utilities/xargs.cpp
+++ b/Userland/Utilities/xargs.cpp
@@ -34,6 +34,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/wait.h>
+#include <unistd.h>
 
 bool run_command(Vector<char*>&& child_argv, bool verbose, bool is_stdin, int devnull_fd);