xMach (Mach4+Lites) cloned from Sourceforge CVS

A tiny Open POWER ISA softcore written in VHDL 2008

Arm SystemReady : BBR Compliance Suite

A Tiny Linux-Compatible Kernel

NES emulator in <5000 bytes of C

SGLIB - A Simple Generic Library for C (originally by Marian Vittek and not maintained by Stefan Tauner at all!)

Forth for Swissmicros DM42 calculator

board managment controller for the solid-run honeycomb arm server

The Interim Operating System

An OpenGL RTS game engine written in C

Syntacore first stage bootloader

Simple, fast, safe, compiled language for developing maintainable software. Compiles itself in <1s with zero library dependencies. Supports automatic C => V translation. https://vlang.io

Preloader for Linux on M1

WebAssembly interpreter in C

42bsd scripts to build and run inside simh

Template to compile Z80/Z180/EZ80 CPM programs with sdcc

An open source sort-of CP/M 2.2 distribution.

Few people use Forth. But this might be useful if you want to!

ARM Cortex M0 emulator for DOS

DPDK

Light scaffolding for building kexec as a loadable kernel module

Tegra 3 and Tegra 4 TrustZone UEFI variable services handler exploit and Secure Boot unlock tool

Documentation for the RISC-V Supervisor Binary Interface

OpenCore bootloader

Home of the HX DOS Extender and its DPMI-host HDPMI.

A limit-removing source port of Doom, Heretic and Hexen. It has numerous vanilla bug fixes, enhanced 640x400 and 1280x800 rendering resolutions, improved game palettes and offers many optional aest…

progman.exe^H^H^H^H

UEFI application for TCP network transport testing.

Forth 83 and MSX computer. Libraries and tools to use Forth 83 CP/M-80 (by Laxen and Perry) with MSX computers.