The leading data integration platform for ETL / ELT data pipelines from APIs, databases & files to data warehouses, data lakes & data lakehouses. Both self-hosted and Cloud-hosted.

Apache Log4j 2 is a versatile, feature-rich, efficient logging API and backend for Java.

Scripts for generating music

⚔ Multiplayer Framework for Node.js

Static Analyzer for Solidity and Vyper

Top-level package for the official Snap Framework libraries, includes the snaplets API as well as infrastructure for sessions, auth, and templates.

Abseil Common Libraries (C++)

Curated list of project-based tutorials

book list

MetaCall: The ultimate polyglot programming experience.

A resource to help you pass system design interview and become good at work 👇

Fast PlayStation 1 emulator for x86-64/AArch32/AArch64/RV64

x86 PC emulator and x86-to-wasm JIT, running in the browser

A minimal GPU design in Verilog to learn how GPUs work from the ground up

A distributed key value store in under 1000 lines. Used in production at comma.ai

🕵️ Haskell STatic ANalyser

Implementation of HTTP Web Proxy Server

A parallel programming training mini app simulating weather-like flows

16-bit CPU for Excel, and related files

Geometry Processing Library for Python

A fast JSON parser/generator for C++ with both SAX/DOM style API

Your backend, minus the hassle.

Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks

How to be low-level programmer

Animated sprite editor & pixel art tool (Windows, macOS, Linux)

Ruby FFI

Bind a java thread to a given core

Micro second messaging that stores everything to disk