A Vulkan and OpenGL overlay for monitoring FPS, temperatures, CPU/GPU load and more. Discord: https://discordapp.com/invite/Gj5YmBb

An open source, embedded, high performance g-code-parser and CNC milling controller written in optimized C that will run on a straight Arduino

Apache NuttX is a mature, real-time embedded operating system (RTOS)

An open source re-implementation of Caesar III

Arduino library to play MOD, WAV, FLAC, MIDI, RTTTL, MP3, and AAC files on I2S DACs or with a software emulated delta-sigma DAC on the ESP8266 and ESP32 and Pico

Linux kernel driver for Xbox One and Xbox Series X|S accessories

A C++ bare metal environment for Raspberry Pi with USB (32 and 64 bit)

Xash3D FWGS engine

Raspberry Pi Pico (RP2040) based IPL replacement modchip for GameCube

Floppy drive emulator for Gotek hardware

Open Watcom V2.0 - Source code repository, Wiki, Latest Binary build, Archived builds including all installers for download.

Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI

cheap lipo charger

Shockolate - A minimalist and cross platform System Shock source port.

68k Hardware Emulator

GL4ES is a OpenGL 2.1/1.5 to GL ES 2.0/1.1 translation library, with support for Pandora, ODroid, OrangePI, CHIP, Raspberry PI, Android, Emscripten and AmigaOS4.

SoundFont2 synthesizer library in a single C/C++ file

legacy sound blaster emulation for DOS

Exploit to allow loading arbitrary code on the PSX using only a memory card (no game needed)

A fan port of Cave Story for the Sega Mega Drive

a gcc-based cross-compiler for classic 68K and PPC Macintoshes

Argonaut Blazing Render (BRender) 3D engine

A cross-platform reimplementation of JKDF2 in C

The GL Vendor-Neutral Dispatch library

The cross-platform, open-source SDK to develop for original Xbox: *new* xdk

HDDSuperClone, HDDSuperTool

Commodore 1541 emulator for the Raspberry Pi

Open source software for TL866