A JavaScript NES emulator.

The original IBM PC and other machine emulations in JavaScript

Apple II emulator for Windows

Qt-based Nintendo Entertaiment System emulator and NSF/NSF2/NSFe Music Player (Linux, FreeBSD, OpenBSD and Windows)

Compile Java byte-code to native CPU's.

Ultimate Commodore 64 Reference: ROM Disassembly, Memory Map, ...

PCjs Machines 1.0 (archived)

Self-hosting metacompiled Forth, bootstrapping from a few lines of C; targets Linux, Windows, ARM, RISC-V, 68000, PDP-11, asm.js.

Fully documented and annotated source code for the cassette version of Elite on the BBC Micro

Port of LLVM to the MOS 6502 and related processors

Ted Fried's MicroCore Labs Projects which include microsequencer-based FPGA cores and emulators for the 8088, 8086, 8051, 6502, 68000, Z80, Risc-V, and also Typewriter and EPROM Emulator projects. MCL51, MCL64, MCL65, MCL65+, MCL68, MCL86, MCL86+, MCL86jr, MCLR5, MCLZ8, MCL6809, XTMax

Another NES Emulator - written for fun & learning - first implementation of wideNES

Fully documented and annotated source code for Elite on the Nintendo Entertainment System (NES)

NES/Famicom emulator with network multiplayer

Javascript BBC micro emulator

Integrated Development Environment for the 8-bit Nintendo Entertainment System

SDK for developing with the llvm-mos compiler

Disassembly of the Apple II Desktop - ProDOS GUI

Apple ][ emulator for MS-DOS, written in 8088 assembly

Millfork: a middle-level programming language targeting 6502- and Z80-based microcomputers and home consoles