Curated list of awesome Uxn projects from the community.

The Uxn ecosystem is a personal computing playground, created to host small tools and games, programmable in its own unique assembly language.

• Varvara - Technical documentation of the Varvara computer and a list of all its devices.
• Uxntal - Uxntal language reference manual.
• Uxntal opcode manual - List of Uxntal opcodes and their effects.
• Sprite format - .chr file format description.
• Font format - .ufx file format description.
• Uxntal Cheatsheet - Opcode Cheatsheet.

• Uxn Tutorial by Compudanzas - Beginner-friendly tutorial guide which covers the basics of Uxn programming.
• Uxn Tutorial by Compudanzas(video) - Beginner-friendly video workshop which covers the basics of Uxn programming.
• Learn Uxntal in Y minutes - Quick Uxntal guide.
• Uxn implementation guide - Notes on how to implement the Uxn/Varvara virtual machine specification.
• macOS installation
• Windows installation
• Android installation - Guide for running Uxn on the Android operating system through Termux.
• HaikuOS - Forum thread for the Haiku operating system.

• Desktop

  • Uxn - Cross-platform emulator and assembler, written in C(SDL2).
  • Uxn32 - Windows emulator, written in C.
  • Uxn11 - Linux emulator, written in C.
  • UxnFb - Linux framebuffer emulator, written in C.
  • UxnRPI - RaspberryPi framebuffer emulator, written in C. (no input support)
  • UxnAmiga - AmigaOS emulator, written in C. (no keyboard or joystick input, no audio support)
  • UxnEssence - Essence emulator, written in C.
  • UxnJulia - Cross-platform emulator and assembler, written in Julia.
  • UxnLua - Cross-platform emulator, written in Lua(Love2d).
  • Uxn38 - Emulator written in C with SDL1.
  • Nux - Emulator written in Go.
  • uxn-rs - Emulator written in Rust.
  • ruxn - A Uxn library written in Rust, intended to make defining new Uxn-based systems easy.
  • zuxn - A Uxn library, emulator and assembler written in Zig.

• Other systems

  • FPGA - Nearly Complete.
  • RPi - Nearly Complete.
  • Game Boy Advance - Complete.
  • Nintendo 64 - Complete.
  • Nintendo DS - Complete.
  • Playdate - Complete.
  • Nook eReader - Complete.
  • Nokia N900 - Partial.
  • Game Boy - Experimental.
  • DOS - Implemented: Core, Screen, Mouse, Controller.
  • Teletype - Incomplete.
  • ESP32 - Incomplete.
  • iOS - Nearly Complete (missing midi and controller).
  • iOS - Incomplete.
  • STM32 - Incomplete.
  • STM32duino - Incomplete.
  • IBM PC - Incomplete.
  • PlayStation Vita - Incomplete.
  • PlayStation Portable - Nearly Complete (missing keyboard).
  • Atari ST - Incomplete.

• Misc

  • Libretro port - Libretro emulation layer.
  • LearnUxn - Web assembler and emulator.
  • Grid - Incomplete.
  • Rockbox - Implemented: Core, Screen.
  • Logisim - Incomplete.
  • Adafruit PyBadge - Implemented: Core, Console, Screen, Controller.
  • Webuxn - Lightweight port of the Uxn virtual machine to the web via WebAssembly.
  • auxn - uxn running inside of an audio plugin (standalone mode included)
  • UxnWasm - WebAssembly implementation of the Uxn core.

• Simulator

  • uxn.py - Python implementation of the VM.
  • uxn.js - Javascript implementation of the VM.

• Creative

  • Left - Graphical plain-text editor with proportional fonts and Uxntal syntax highlight.
  • Nasu - Spritesheet editor.
  • Noodle - Drawing tool.
  • Turye - Font editor.
  • Orca - Livecoding IDE.
  • uxn-harp - Chordal musical toy.

• Utilities

  • Dexe - Graphical hex editor.
  • Calc - Graphical hexadecimal calculator.
  • Clock - Graphical clock.
  • Starling - Spreadsheet application.
  • Beetbug - Step debugger.

• Games

  • Niju - Hiragana and katakana learning game.
  • Donsol - Card game about exploring a dungeon made of a standard 54 poker card set.
  • Flappy - Implementation of a Flappy Bird-like game.
  • Pong - Recreation of the classic Pong game.
  • Snake - Classic Snake game implementation.
  • Cat Cubes - Puzzle game about matching and clearing tiles from a board.
  • Minesweeper - Minesweeper port for Varvara.
  • XO - TicTacToe for Varvara.
  • Fourtette - Tetris for Varvara.
  • Shanghai - Mahjong Solitaire for Varvara.
  • Pinkie Run - Pony-themed Endless Runner for Varvara.
  • oneko-uxn - A version of “Neko”, the classic desktop pet cat, with several characters.
  • Lights Out - Puzzle game for Varvara.
  • Worm - Dune themed snake game for Varvara.

• Networking

  • Xrxs - Experimental game server using the Plan 9 protocol 9p.

• Operating systems/REPLs

  • UF - A traditional Forth system for Varvara.
  • CollapseOS - Forth-based operating system for Varvara.
  • Uxnfth - Uxn-native forth.
  • PotatoOS - A little desktop environment.
  • Varaboy - Gameboy Emulator.

• Demos

  • Bad-apple-uxn - Bad Apple!! video on a single Uxn ROM.
  • tiles - A scrolling tile-map renderer.
  • svitlyna - A "full-color" image viewer.

• Libraries

  • math32 - Unsigned 32-bit integers
  • regex - Regex parsing and matching (repl)
  • fix16 - Signed 16-bit fixed point numbers (8.8)
  • alloc - Arena-based memory allocator
  • arg - Command-line argument parsing (demo)

• Terminal / Command-line

  • femto - nano-like text editor (about / launcher / rom)
  • grep - minimal grep-like tool (uses regex.tal)

• IDEs

  • Learn-uxn - A web-based development environment with a text editor and up-to-date versions of Uxnasm and Uxnemu.

• Assemblers, compilers & disassemblers

  • Uxnasm - The original implementation of the Uxntal assembler in about 400 lines of ANSI C.
  • Asma - Uxntal assembler, written in Uxntal.
  • Drifblim - Uxntal Assembler, written in Uxntal.
  • Uxncle - Compiler for a small subset of C to Uxn bytecode.
  • Pyuxncle - Python implementation of Uxncle.
  • Conch - Compiler for a C-like language with Lisp-like syntax to Uxn bytecode.
  • Uxnbruteforce - Tool for optimizing little pieces of Uxntal code.
  • Uxnlin - Linter for Uxntal.
  • Uxnbot - IRC bot for assembling and running small Uxntal snippets.
  • Pyuxntaldisasm - Very basic disassembler for Uxn ROMs.
  • Uxnasm-js - Uxntal assembler written in JavaScript.
  • Uxn-disassembler - A rom disassembler writen in Uxntal
  • Dotal - A small language designed to compile to the Uxn virtual machine.
  • lunas - An Uxntal assembler written in Lua.
  • chibicc-uxn - A C compiler for Uxn, written in C.
  • nito - A compiler from Uxntal to C, written in Raku. See also the blog post.
  • funktal - A small, statically typed, functional programming language that compiles to Uxntal. The compiler is written in Fortran. See also the blog post.

• Uxntal language support

  • Atom language package
  • Emacs mode (alt 1 alt 2)
  • Kakoune plugin
  • Lite XL plugin
  • Micro syntax
  • Nano syntax
  • Nano syntax(alt)
  • Sublime syntax
  • Vim plugin
  • Visual Studio Code extension

• Testing

  • Uxn-instruction-tests - Test suite for the Uxn CPU instruction set.
  • opctest - Test suite included in the uxn repository.

• Benchmarking

  • Bunnymark - Render performance benchmark.

• Lines
• #uxn on irc.libera.net
• #uxn on Merveilles