Unicorn CPU emulator framework (ARM, AArch64, M68K, Mips, Sparc, PowerPC, RiscV, S390x, TriCore, X86)

Capstone disassembly/disassembler framework for ARM, ARM64 (ARMv8), Alpha, BPF, Ethereum VM, HPPA, LoongArch, M68K, M680X, Mips, MOS65XX, PPC, RISC-V(rv32G/rv64G), SH, Sparc, SystemZ, TMS320C64X, TriCore, Webassembly, XCore and X86.

Reko is a binary decompiler.

All CPU and MCU documentation in one place

SGDK - A free and open development kit for the Sega Mega Drive

A latency-hating emulator of: the Acorn Electron and Archimedes, 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, early PC compatibles, Sega Master System, Sinclair ZX80/81 and ZX Spectrum.

Mini vMac for iOS

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

Main AROS repository for active development. Contains the main Operating System components and Build System.

Unicorn Emulator Debug Server - Written in Rust, with bindings for C, Go, Java and Python

A compiler for ARM, X86, MSP430, xtensa and more implemented in pure Python

Open source development for Neo-Geo

An experimental operating system for 32bit Amiga computers.

A language-agnostic JSON-encoded instruction-by-instruction test suite for the 8088, 68000, 65816, 65[c]02 and SPC700 that includes bus activity.

Design, documentation and software for the Really Old School Computer (M68K)

A modern webapp to write, run and learn M68K assembly code

A Sega Mega CD development framework in C and 68k asm

Experiments with BasiliskII on iOS and macOS

NeXTROM

Experimental Philips CD-I emulator written in C++