Z80 shared library including some nice test-projects
Emulator of the 8-bit computers Sharp MZ-800 / MZ-700
Very fast classes for working with Dynamic Arrays in Delphi and C++
ATasm is a 6502 command-line cross-assembler.
A Java VM for ARDUINO and other micros using the leJOS runtime.
A UNIX-like kernel for the i386 architecture
Lightweight General Purpose Linux Distribution
Yet another Kernel - clone the git repo for newest version
An 8 bit emulator created on the scratch, including an assembler.
z390 Portable Mainframe Assembler and Emulator