73 Open source projects that are alternatives of or similar to c64

Free open-source compressor for apLib with 5-7% better ratios

Mandelbrot set drawers for vintage hardware

64tass - cross assembler for 6502 etc. microprocessors - by soci/singular - [git clone from the original sourceforge repo]

Convertron3000 commodore 64 graphics converter

🤓🕹💾 This hobby project contains software implementations of old microprocessors and complete computer systems. I'm very interested in retrocomputing and this is how I learn about the inner workings of these old, classic and amazing computers and game consoles.

volksFORTH is a 16bit Forth System maintained by the German Forth Gesellschaft e.V.

Tools for working with monochrome bitmap fonts

A NodeMCU (ESP8266) based WiFi modem for the C64's user port

Mad Pascal Compiler for 6502 (Atari XE/XL, C64, C4Plus)

Fully documented and annotated source code for Angus Duggan's Elite-A on the BBC Micro

Port of reSID, a MOS6581 SID emulator engine, to Rust

A collection of BASICODE programs by various authors

Use a Raspberry Pi as fast mass storage solution for your Commodore 8-bit computer using just the datassette port.

The Eight Bit Algorithmic Language for Apple II, Commodore 64 and VIC20

vc64web - web based Commodore 64 Emulation with CSDb access for thousands of demos at your fingertip

Open Hardware 1 MB Chip RAM Expansion for the Commodore Amiga 600 Computer

A HAT for the Raspberry Pi, that allows to emulate the Commodore C64 floppy disk drive 1541. Switches and IEC-Bus detachable.

Awesome Lists of retrocomputing resources (6502, Apple 2, Atari, ...)

editor for the Commodore 64

3DO M1 Opera Portfolio Operating System

MOS 6502 emulator written in Rust

This is a replacement PSU (230VAC input) for the Commodore C64.

Assembling Microsoft GW-BASIC from 1983, with MASM or JWasm • "pre-release" binaries at https://github.com/tkchia/GW-BASIC/releases • source mirror at https://gitlab.com/tkchia/GW-BASIC • fork of https://github.com/dspinellis/GW-BASIC

SE Basic IV 4.2 Cordelia - A free BASIC interpreter written in Z80 assembly language

Create DOS programs with Zig

cc64 is a small-C compiler written in Forth, hosted on the Commodore C64, Plus4 and C16 with 64k, and on the Commander X16. It is targeting the 6502 CPU.

KiCad schematics and gerbers for a YM sound card for the RC2014. See it in action here: https://www.youtube.com/watch?v=-iLwi9FagFE

Anteform is a retro weird detective game written using the Minima Engine for PICO-8.

retrohunblog

Source code for my c64-wifimodem

Remaking the classic C64 game in WebGL.

Control Amiga add-on boards through mouse buttons

Notepad++ Syntax Highlighting for 6502 Assembly (and NESASM)

a game engine for the c64

Feature-limited C64 music playroutine

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

A free, open-source compressor for the ZX0 format

SID-based chiptune tracker for android

A curated list of original and reverse-engineered vintage 6502 game sourcecode.

Software Automatic Mouth - Tiny Speech Synthesizer

16bit retro programming in DosBox with Borland C++ 3.1, Turbo Pascal 7 and TASM

Commodore 16 schematics and PCB, redrawn in Kicad

3D models and additional files for the project Commodore PET Mini

No description or website provided.

A Terminal Based Chip-8 Emulator

Toy project that re-implements bits of AppKit for classic MacOS 9 on 680x0 (and emulated on PowerPC) using Metrowerks CodeWarrior Pro 6's MWObjC Objective-C compiler.

turns out I like bitmap fonts

Some tools to process C64 sprites and tilesets

4 MB Fast RAM Expansion for the Commodore Amiga 600

A Commodore (CBM) BASIC V2 interpreter/compiler written in Java

A Javascript scripting engine for DOS

A horizontal space shooter for Commodore 64.

Raspberry Pi extension board for the PI1541 project.

The IBM PS/1 emulator.

SIDKick -- the first complete SID 6581/8580-drop-in-replacement that you can build yourself

Adventures into retro 8 bit Commodore 64 programming

MOS6581 SID chip emulator in SystemVerilog

Commodore 64 OS running on Atari 8-bit hardware

A retro development IDE for the creation of games on 8-bit computers.

Running Rust code on the Commodore 64