PICSimLab is a realtime emulator for PIC, Arduino, STM32, ESP32, ...
Software development for 4Mb portable, using Z80 CPU and AA batteries
Open Watcom C/C++ compilers and tools Fork
An introduction to ARM64 assembly on Apple Silicon Macs
C compiler and dev kit for the z80 with assembly language libraries.
Building and running ancient Linux on Windows
a self-contained development environment for embedded systems.
ImpLib SDK produces custom Import libraries for Windows DLL
A set of tools related to assembly language programming.
Tools and Z80 engine for creating adventure games.
M6811 Code-Seeking Disassembler
This is a port of the ebe programming environment to QT.
Homebrew toolchains for wii, gamecube, 3ds, ds, gba, gp32 and psp
64-BIt Operating System with Compiler
A C Compiler/Editor for Retro 6809 Machines (Colour Computer/Dragon)
Classic & Modern Cryptography tools
a very fast full system simulator
Open Utlity is series of unix utlity just like gnu for linux / windows