MacintoshPi is a project that allows running full-screen versions of Apple's Mac OS 7, Mac OS 8 and Mac OS 9 with sound, active online connection and modem emulation under Raspberry Pi.

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

Project for capturing vintage, classic, aka old computer schematics in KiCad.

VirtualC64 is a cycle-accurate C64 emulator for macOS

The source from my Commodore 64 assembly programming tutorial for Windows

Open Hardware Remake of the Commodore Amiga 500+ Mainboard

SIDKick pico is an inexpensive dual-SID-replacement for the C64 and C128

Emulations (running on Linux/Unix/Windows/macOS, utilizing SDL2) of some - mainly - 8 bit machines, including the Commodore LCD, Commodore 65, and the MEGA65 as well.

Homebrew 65C02 computer on a backplane

A curated list of software emulators and simulators of PCs, home computers, mainframes, consoles, robots and much more...

Collection of cartridges, adapters, and replacements for the Commodore C64

Commodore 64 VIC-II 6567/6569 Replacement Project

A harness for the Diagnostic Rev. 586220 Test for the Commodore C64

Original sources and binaries for Supermon+64 V1.2 by Jim Butterfield

tapuino

spritemate is a browser based sprite editor for the Commodore 64

A Commodore IEC Serial multi-device emulator

A Java framework for building highly customizable PETSCII-enabled BBS, accessible from Commodore 64/128

A Z-machine interpreter for the Commodore 64 and similar computers

Open Hardware 8Kb Cartridge for the Commodore 64