1111 Open source projects that are alternatives of or similar to apultra

A free, open-source compressor for the ZX0 format

A .Net-based Cross-Assembler for Several 8-Bit Microprocessors

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

very simple LZ77-based compression

🤓🕹💾 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.

JETPAC: annotated source code disassembly of this classic 8-bit game (1983, ZX Spectrum)

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

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

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

MT32-PI.EXE/MT32-PI.TTP/mt32-pi-ctl is a control program for the mt32-pi MIDI synthesizer available for DOS PCs, Atari ST and Amiga computers as well as modern systems running Linux and Windows.

C++ library of assembler / disassembler that can run on embedded system

Adventures into retro 8 bit Commodore 64 programming

A horizontal space shooter for Commodore 64.

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.

👾 A GameBoy Color Emulator written in JavaScript

Disassembled code of HiSoft C compiler for ZX Spectrum

A Scala Commodore 64, 128, VIC20, CBM2 and SuperCPU emulator

Classic ZX Spectrum game "The Great Escape" reverse engineered

A simple text-based adventure game

Mirror of http://bitbucket.org/zxtune/zxtune repository with robot-only issues tracker

A unit testing framework for Sinclair ZX Spectrum assembly

Library for creating Atari ST software

Control Amiga add-on boards through mouse buttons

Collection of ZX Spectrum annotated game source code dissasemblies as .skool files

Move your Amiga 2000 CPU to the Coprocessor slot!

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

A Game Boy Sound System player for macOS, written in Swift

Image Compression Algorithm

Sound driver for Sega Mega Drive

Convertron3000 commodore 64 graphics converter

Intel 8080/Zilog Z80 assembler written in D.

zx spectrum 128 emulation on stm32f407 + Grant Searle's CP/M system port ili9341 16 bit display

Zany80 fantasy computer system

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

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

ZX Spectrum CPLD-based clone for rubber case

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

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

Lepton is a tool and file format for losslessly compressing JPEGs by an average of 22%.

Z80+ARM=BUGS

All CPU and MCU documentation in one place

🔥 A Nintendo Game Boy Advance emulator

ZX Spectrum browser for forums and imageboards

Example of LZ4 compression with optimal parsing using BriefLZ algorithms

LZ77(LZSS) based compression algorithm in base62 for JavaScript.

Compression and decompression tools for NES, SNES, and Game Boy games by HAL Laboratory

Byte-aligned, efficient lossless packer that is optimized for fast decompression on 8-bit micros

Django middleware that compresses response using brotli algorithm.

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

build a toolchain for cross developement. Supports motorola m68k-elf, avr and arm-none-eabi

x – minimalist data compressor

A C++ compression program based on Huffman's lossless compression algorithm and decoder.

Offline Dictionary-based Compression (Re-Pair, Recursive Pairing)

GORILLA.BAS port to CP/M in Turbo Modula-2. Supported terminals: VT52, VT100, ANSI, ADM-31, KayPro, C128, Memotech monochrome, CPC / Zenith Z19

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

Mandelbrot set drawers for vintage hardware

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

4 MB Fast RAM Expansion for the Commodore Amiga 600

Small fast Lempel-Ziv compression library

Open Kick-Off is a fun rewriting attempt of the cult football game Kick Off 2 designed by Dino Dini and released in 1990 by Anco for the Atari ST and the Commodore Amiga. It is written in Java with the help of libGDX.