Linux kernel source tree

For developers, who are building real-time data-driven applications, Redis is the preferred, fastest, and most feature-rich cache, data structure server, and document and vector query engine.

stb single-file public domain libraries for C/C++

How to create an OS from scratch

TLS/SSL and crypto library

Cross-platform asynchronous I/O

A flexible distributed key-value database that is optimized for caching and other realtime workloads.

How to Make a Computer Operating System in C++

HandBrake's development repository

MicroPython - a lean and efficient Python implementation for microcontrollers and constrained systems

A time-series database for high-performance real-time analytics packaged as a Postgres extension

The systemd System and Service Manager

Beyond file syncing and sharing, a new way to organize your files with extensible file properties and flexible views

Cross-platform, sophisticated frontend for the libretro API. Licensed GPLv3.

A fast image processing library with low memory needs.

A tiling window manager for X11

Quake III Arena GPL Source Release

OpenBLAS is an optimized BLAS library based on GotoBLAS2 1.13 BSD version.

Original Windows File Manager (winfile) with enhancements

A Small C Compiler

Quake GPL Source Release

canonical libwebsockets.org networking library

OSv, a new operating system for the cloud.

LK embedded kernel

Quake 2 GPL Source Release

cc65 - a freeware C compiler for 6502 based systems

GPGPU microprocessor architecture

A C library for asynchronous DNS requests

Keen Dreams on Greenlight!

A columnar data container that can be compressed.