Linux kernel source tree

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

A simple and easy-to-use library to enjoy videogames programming

A fast image processing library with low memory needs.

Xv6 for RISC-V

xv6 OS

The FreeBSD src tree publish-only repository. Experimenting with 'simple' pull requests....

Quake III Arena GPL Source Release

WinBtrfs - an open-source btrfs driver for Windows

A small utility to modify the dynamic linker and RPATH of ELF executables

Synthesizer plug-in (previously released as Vember Audio Surge)

Open source ARM Cortex-M microcontroller library

Audio Plugin API

SGDK - A free and open development kit for the Sega Mega Drive

DUNE, REINVENTED

A simple yet fast user space network driver for Intel 10 Gbit/s NICs written from scratch

A library for high-performance, modern 2D graphics with SDL written in C.

Prism Ruby parser

"interesting" VM in C. Let's see how this goes.

id Software's Quake 2 v3.21 with mission packs and Vulkan support (Windows, Linux, macOS, FreeBSD, Raspberry Pi 4)

wander - the Wasm Renderer

UC Berkeley release of Plan 9 under the GPLv2

Operating system for the Sega Dreamcast

Lightweight C 2D graphics API agnostic library with parallelism support

PRVHASH - Pseudo-Random-Value Hash. Hash functions, PRNG with unlimited period, randomness extractor, and a glimpse into abyss. (header-only C/C++) (Codename Gradilac/Градилак)

A lightweight and portable cryptography library

History of the Plan 9 kernel (1990 - 2003).

Version 7 Unix for a POSIX world

The C API header of the VST3 API

Motorola 68000 simulator for Mac OS X