A JavaScript NES emulator.

A latency-hating emulator of 8- and 16-bit platforms: the Acorn Electron, Amstrad CPC, Apple II/II+/IIe and early Macintosh, Atari 2600 and ST, ColecoVision, Enterprise 64/128, Commodore Vic-20 and Amiga, MSX 1/2, Oric 1/Atmos, Sega Master System, Sinclair ZX80/81 and ZX Spectrum.

The original IBM PC and other machine emulations in JavaScript

Apple II emulator for Windows

PCjs Machines 1.0 (archived)

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

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

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

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

Javascript BBC micro emulator

Port of LLVM to the MOS 6502 and related processors

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

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

Integrated Development Environment for the 8-bit Nintendo Entertainment System

A JSON parser written in 6502 assembly language.

Disassembly of the Apple II Desktop - ProDOS GUI

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

Yet another 6502 emulator that one day dreams of being an Atari 2600.

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

A cycle-accurate, cross-platform NES emulator written in C++