A delightful networking framework for iOS, macOS, watchOS, and tvOS.

An in-app debugging and exploration tool for iOS

Staggeringly powerful macOS desktop automation with Lua

Darwin/macOS emulation layer for Linux

RestKit is a framework for consuming and modeling RESTful web resources on iOS and OS X

LuLu is the free macOS firewall

A conforming Objective-C WebSocket client library.

MacOS system extension that allows applications to pass audio to other applications. Soundflower works on macOS Catalina.

Mac app that shows all open files, directories, sockets, pipes and devices in use by all running processes. Nice GUI for lsof.

iOS library for quickly displaying images while scrolling

iOS Objective-C headers as derived from runtime introspection

A collection of awesome flat UI components for iOS.

Three20 is an Objective-C library for iPhone developers

Runtime Code Injection for Objective-C & Swift

The iOS framework that grows only as fast as its documentation

Keep It Functional - An iOS Functional Testing Framework

An XMPP Framework in Objective-C for Mac and iOS

Remote network and data debugging for your native iOS app using Chrome Developer Tools

Bolts is a collection of low-level libraries designed to make developing mobile apps easier.

An easy way to fine-tune, and adjust parameters for iOS apps in development.

Patch iOS Apps, The Easy Way, Without Jailbreak.

idb is a flexible command line interface for automating iOS simulators and devices

This framework implements a strict JSON parser and generator in Objective-C.

Fast iOS executable dumper

Install and debug iPhone apps from the command line, without using Xcode

A Quartz Composer framework that enables interactive design prototyping without programming.

Blackbox tool to disable SSL certificate validation - including certificate pinning - within iOS and macOS applications.

iOS-app template with lots of common tasks solved

A UI framework for Mac based on Core Animation

Better playgrounds that work both for Objective-C and Swift