PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
C compiler and dev kit for the z80 with assembly language libraries.
a DOS TSR that emulates a floppy disk drive over ethernet
DOS based graphical menu / program starter
Featureful native Commodore 64 music tracker with MIDI/XM converter
Simplest kernel for cooperative multithreading
An little operating system
SW Tools + HW design example for Mechanical Narrow Band TV
Text mode file and archive manager for Windows
A C Compiler/Editor for Retro 6809 Machines (Colour Computer/Dragon)
A DirectShow and Video for Windows codec (VFW)
Standalone software for photo editing and digital painting.
Embedded Operating System
Access to Irrlicht Engine SDK from assembler, C, Python, Basic, Pascal
Quantum Leaps (QPC) DPP example with LWIP on STM3220G eval board