The Open On-Chip Debugger
A bleeding-edge, security-centric Arch-based Linux distribution.
A Serial Terminal Console for development on a remote (Forth) device
Z80 shared library including some nice test-projects
An open-source Phantasy Star Online server for *nix
amforth is an extendible interpreter on microcontrollers
Minimalistic C library for CP/M
Graphics mode console I/O for the TRS-80 Color Computer
A microkernel-based multiserver operating system written from scratch.
English Examples Projects for HC6800EM3 MCU devkit
An open source filesystem library
Prolog to C compiler with runtime for DOS, Windows and Raspbian
UNIX/LINUX and legal homebrew software on the xbox360 gaming console
Forth interpreter for Win32
Game backup loader for Wii and vWii
Pattern-based multi/many-core parallel programming framework
FreeDOS is an open source DOS-compatible operating system