Awesome MoonBit

Everything you'll ever need on the road to mastering MoonBit.

A curated list of high-quality MoonBit libraries, frameworks, developer tools, and learning projects. Project names link to their source repositories.

Community

• Official MoonBit Website
• Mooncakes Package Registry
• MoonBit Discourse Forum
• MoonBit Discord
• MoonBit on GitHub
• MoonBit on YouTube
• MoonBit on X / Twitter

Libraries and Frameworks

Foundations and Testing

• moonbitlang/core: The MoonBit standard library, installed with the toolchain.
• moonbitlang/x: The official incubator for experimental standard-library extensions; APIs may change.
• moonbitlang/async: The official experimental async runtime for files, processes, networking, sockets, and HTTP.
• moonbitlang/quickcheck: Property-based testing for MoonBit programs.
• moonbitlang/parser: Experimental AST, parser, configuration parser, and formatting support for MoonBit source.
• moonbitlang/regexp: A Unicode-aware regular-expression engine with captures and backreferences; the API is still alpha.

Text, Data, and Parsing

• bobzhang/toml: A TOML 1.1 parser with extensive conformance tests and a generic lexer.
• moonbit-community/yaml: YAML parsing and serialization for a documented, JSON-compatible subset.
• moonbit-community/NyaCSV: CSV parsing with quoted fields, custom delimiters, and streaming-friendly APIs.
• moonbit-community/cmark: A CommonMark parsing and rendering toolkit.
• mizchi/markdown: A lossless, incremental Markdown parser and compiler for editor workloads.
• moonbit-community/XMLParser: XML parsing for elements, attributes, comments, CDATA, and processing instructions.
• moonbit-community/prettyprinter: A composable document-layout and pretty-printing library.
• gmlewis/base64: A maintained Base64 encoder and decoder based on Go's implementation.
• moonbit-community/flate: A runtime-agnostic, pure-MoonBit DEFLATE engine with gzip and zlib wrappers.
• hustcer/fzip: In-memory DEFLATE, gzip, zlib, and ZIP compression with streaming APIs and extensive security tests.
• Actively maintained ports of Go's checksum, hash, and compression libraries:
  • gmlewis/crc32
  • gmlewis/hash
  • gmlewis/gzip
  • gmlewis/zlib
  • gmlewis/md5: For compatibility, not security.
• kawaz/grapheme: Unicode grapheme-cluster segmentation implementing UAX #29.
• tonyfettes/unicode: Unicode 16 data and algorithms including normalization, IDNA, bidirectional text, and Punycode.
• moonbit-community/fuzzy_match: Fuzzy string matching and searching adapted from Jane Street's fuzzy_match.

Application Development

• moonbit-community/proton: A framework for native desktop applications with web frontends on Windows, macOS, and Linux.
• moonbit-community/rabbita: A declarative, functional web UI framework formerly known as Rabbit-TEA.
• tiye/respo: A compact virtual-DOM library for browser applications.
• mizchi/luna: An experimental declarative UI toolkit with virtual DOM, hydration, streaming rendering, and SSR/SSG companions.
• oboard/mocket: A web framework supporting native and JavaScript backends.
• mizchi/mars: A Hono-inspired web framework with trie routing, middleware, and server-sent events.
• Yoorkin/rui: Self-contained Vega-style UI components for Rabbita.
• mizchi/tui: A reactive terminal user-interface library.
• wzzc-dev/moui: A multi-platform MoonBit declarative GUI framework — build declarative UI apps with shared platform-neutral logic.
• LING71671/moon-egui: A lightweight, high-performance pure-MoonBit immediate-mode GUI library for WebAssembly, Canvas, and games.

Data Structures and Algorithms

• dowdiness/alga: Algebraic graphs with reusable traversal, cycle, topological-sort, and strongly-connected-component algorithms.
• dowdiness/incr: Incremental recomputation with automatic dependency tracking and durability-based verification.
• Luna-Flow/linear-algebra: Checked matrix and vector APIs with mutable and immutable dense representations.
• Suquster/moonbit-pathfinding: Pathfinding and graph algorithms including BFS, Dijkstra, A*, JPS, contraction hierarchies, and hub labels.

Systems and Interoperability

• moonbit-community/tty: Low-level native terminal state, standard handles, VT output, and input decoding.
• moonbit-community/pty: Cross-platform pseudo-terminal spawning integrated with moonbitlang/async.
• justjavac/ffi: Tested UTF-8 C-string and UTF-16 wide-string conversions for FFI boundaries.
• illusory0x0/native: Native FFI utilities for pointer arithmetic, C strings and arrays, reference counting, and allocation.
• mizchi/js: JavaScript bindings for built-ins and Node.js, Deno, and Bun APIs, with package documentation for mizchi/js 0.12.2 and browser APIs in mizchi/js_browser 0.12.2.
• bikallem/webapi: Type-safe Web Platform API bindings generated from WebIDL for the JavaScript and wasm-gc backends.
• moonbit-community/sqlite3: Lightweight, low-level bindings that provide a thin interface over the SQLite3 C API.
• moonbit-community/postgres: A PostgreSQL client library with an included connection pool.
• mizchi/wit: A parser and resolver for WebAssembly Interface Types.
• gmlewis/moonbit-pdk: The actively maintained Extism plug-in development kit for MoonBit.

Graphics and Media

• bobzhang/colors: Color conversion and manipulation across RGB, linear RGB, XYZ, and LUV spaces.
• mizchi/image: Image codec primitives for PNG, BMP, JPEG, GIF, WebP, ICO, and AVIF, plus resizing.
• Milky2018/wgpu_mbt: MoonBit bindings for the wgpu-native WebGPU API.
• Milky2018/moon_rapier: A MoonBit port of the Rapier physics engine.
• moonbit-community/diago: A diagram toolkit with D2-compatible input, multiple layout engines, and SVG or text output.

Developer Tools

• Moon: The official build system and package manager.
• MoonLex: A lexer generator for MoonBit.
• MoonYacc: An LR(1) parser generator.
• protoc-gen-mbt: Protocol Buffers code generation and runtime support.
• tree-sitter-moonbit: The official Tree-sitter grammar for MoonBit.
• setup-moonbit: A GitHub Action for installing and caching the MoonBit toolchain.
• moonbit.nvim: MoonBit language support for Neovim.

Showcase and Learning Projects

• MoonBit Gallery: Editable browser demos including Tetris, Mario, Sudoku, Snake, and WASM-4 examples.
• Build Your Own MoonBit: An educational implementation of a small MoonBit-like language.
• wasm5: A WebAssembly virtual machine written in MoonBit.
• mbtcc: A C11 compiler implemented in MoonBit.
• MoonbitNES: A Nintendo Entertainment System emulator written in MoonBit.
• fullstack-moonbit: A full-stack todo example using Rabbita and Moonback with SSR and hydration, targeting browser, server, and desktop from one MoonBit project.

Documentation and Learning

• Official documentation: Language, standard-library, FFI, and toolchain documentation.
• Interactive language tour: Learn MoonBit in the browser.
• MoonBit course: Official course materials and exercises.
• Use and publish packages: The official guide to Mooncakes and package management.
• Build system tutorial: A practical introduction to modern MoonBit project workflows.