Open-source KVM software

The single instruction C compiler

Linux kernel source tree

The ioquake3 community effort to continue supporting/developing id's Quake III Arena

The future of online communications.

An open source re-implementation of Caesar III

Highly configurable Windows taskbar clock

Easily portable doom

Arch Linux kernel sources, with patches

NVIDIA Linux open GPU with P2P support

Linux kernel source tree

Linux source for Allwinner/Boxchip F20 (sun3i), A10 (sun4i), A12/A13/A10S (sun5i) and A20 (sun7i) SoCs

Cloudflare fork of zlib with massive performance improvements

arm64 Linux patched to run programs for the Nintendo Switch’s Horizon OS

The official Last.fm desktop application suite

Open source VPU side bootloader for Raspberry Pi.

https://pcsxr.svn.codeplex.com/svn/pcsxr

HardenedBSD implements strong exploit mitigations and security hardening technologies on top of FreeBSD, with a direct focus on the nexus between human rights and information security. HardenedBSD …

open source driver project for adreno GPUs

LibreSignal • The truly private and Google-Free messenger for Android.

Community developed and maintained version of the OS/Net consolidation

OpenArena modifications to the ioquake3 engine

Mesa 3D graphics library (mirror; no pull requests here please)

Linux kernel source tree

FreeDOS kernel - implements the core MS-DOS/PC-DOS (R) compatible operating system. It is derived from Pat Villani's DOS-C kernel and released under the GPL v2. Please see http://www.freedos.org/ f…

adding Irix (and, to a lesser extent, Solaris) userland emulation to QEMU

Xvisor: eXtensible Versatile hypervISOR

Linux driver for MT7601U with patch for stability and performance on recent kernel versions

Port Allwinner xradio driver to mainline Linux.

Doomgeneric port as a coreboot payload, using libpayload