The Open On-Chip Debugger
Boot macOS, Windows, and Linux on Mac or PC with UEFI or BIOS firmware
An USB programmer for PIC, dsPIC, AVR, serial memories
NES/Famicom emulator based on FCE Ultra.
amforth is an extendible interpreter on microcontrollers
Z80 shared library including some nice test-projects
AO RTOS is small real time OS based on Active Object concurrency model
A high quality MP3 encoder
Arduino Focuser, fully ASCOM complaint
Scanning Probe Microscopy Controller and Data Visualization Software
A microkernel-based multiserver operating system written from scratch.
C-BIOS is an open source BIOS for MSX computers.
An open source filesystem library