Crystal
Crystal is a programming language with friendly syntax, static type checking and modern stdlib. It compiles into efficient, easy-to-distribute native code.
- GitHub: https://github.com/topics/crystal
- Wikipedia: https://en.wikipedia.org/wiki/Crystal_(programming_language)
- Repo: https://github.com/crystal-lang
- Created by: Ary Borenszweig, Juan Wajnerman
- Released: June 2011
- Aliases: crystal-lang, crystallang, crystal-language,
- Last updated: 2026-03-22 00:06:49 UTC
- JSON Representation
https://github.com/waterlink/mocks.cr
General purpose mocking library for Crystal.
Last synced: 22 Mar 2025
https://github.com/AndiLavera/motion.cr
Motion is a framework for building reactive, real-time frontend UI components in your Amber application using pure Crystal that are reusable, testable & encapsulated.
Last synced: 13 May 2025
https://github.com/kieranp/game-of-life-implementations
Conway's Game of Life implementation in various languages
conway-game crystal crystal-lang csharp dart dartlang game game-of-life groovy java javascript kotlin nim nim-lang php python ruby scala swift typescript
Last synced: 20 Aug 2025
https://github.com/fukaoi/crystal-nodejs
Node.js engine for crystal-lang. JS code and npm module executes on crystal-nodejs
crystal crystal-lang nodejs npm
Last synced: 28 Apr 2025
https://github.com/konovod/linalg
Linear algebra library based on LAPACK
crystal lapack linear-algebra matrix
Last synced: 05 May 2025
https://github.com/veelenga/aasm.cr
:arrows_clockwise: Easy to use finite state machine for Crystal classes
Last synced: 22 Apr 2025
https://github.com/docelic/amber-introduction
Introduction to the Amber web framework and its features
amber amber-framework crecto crystal crystal-lang granite-orm slang web-framework
Last synced: 07 May 2025
https://github.com/ilmanzo/crystal-koans
The Crystal Programming Language Koans
crystal hacktoberfest koans test-suite
Last synced: 20 Jan 2026
https://github.com/busyloop/rucksack
Attach static files to your compiled crystal binary and access them at runtime.
Last synced: 20 Jun 2025
https://github.com/j8r/cride
A light CLI text editor/IDE written in Crystal
Last synced: 07 May 2025
https://github.com/didactic-drunk/sodium.cr
Crystal wrapper for the libsodium crypto API
argon2 blake2b chacha20 cryptography crystal digest libsodium libsodium-bindings nacl salsa20
Last synced: 07 May 2025
https://github.com/runcobo/runcobo
An api framework with type-safe params, elegant json serializer. Thanks for enjoying it! 👻👻 https://runcobo.github.io/docs/
api crystal microservice webframework
Last synced: 07 May 2025
https://github.com/werner/crystal_on_steroids
A group of methods to make Crystal more programmer friendly (extracted from Rails ActiveSupport, Powerpack and others)
activesupport crystal extensions friendly happiness programmer-friendly web
Last synced: 08 Apr 2025
https://github.com/i3oris/ic
REPL Interface wrapping Crystal Interpreter (crystal-i).
crystal crystal-interpreter crystal-lang crystal-shard interpreter repl
Last synced: 13 Aug 2025
https://github.com/didactic-drunk/concurrent.cr
Modern concurrency tools for Crystal
Last synced: 07 May 2025
https://github.com/q9f/secp256k1.cr
a native library implementing secp256k1 purely for the crystal language.
bitcoin bitcoin-addresses byte checksum compressed crystal crystal-language ec ecdh ecdsa ethereum ethereum-addresses native-library secp256k1
Last synced: 09 Sep 2025
https://github.com/toddsundsted/ishi
Graph plotting package with a small API and sensible defaults powered by gnuplot.
Last synced: 21 Mar 2025
https://github.com/izniburak/query-builder
sql query builder library for crystal-lang
Last synced: 01 Feb 2026
https://github.com/crystal-lang-tools/emacs-crystal-mode
A minimal crystal mode for emacs, based on ruby-mode.
Last synced: 01 Sep 2025
https://github.com/alex-lairan/monads
Monads for Crystal
crystal crystal-language monads
Last synced: 18 Jan 2026
https://github.com/coudertlab/crystalnets.jl
A julia package for the manipulation of crystal net representations and topology
chemical crystal julia topology
Last synced: 10 Oct 2025
https://github.com/kostya/modest
CSS selectors for HTML5 Parser myhtml
crystal css css-selector selectors
Last synced: 14 Feb 2026
https://github.com/hugopl/fzy
A Crystal port of awesome Fzy project, a fuzzy finder algorithm.
Last synced: 07 Jul 2025
https://github.com/naqvis/crystal-vips
Crystal bindings for the libvips image processing library.
crystal crystal-bindings crystal-lang crystal-language crystal-shard libvips
Last synced: 10 Jul 2025
https://github.com/crystal-community/crystal-ann
Web site to announce new Crystal projects, blog posts, updates and other work activities
amber-framework announcements crystal
Last synced: 27 Jul 2025
https://github.com/elbywan/moongoon
An object-document mapper for MongoDB. 🌙
Last synced: 22 Jul 2025
https://github.com/l3kn/raytracer
CPU Raytracer written in the crystal language
computer-graphics crystal fractal raytracer
Last synced: 02 May 2025
https://github.com/senselogic/cibyl
Lightweight curly-bracket language which compiles to Ruby and Crystal.
braces brackets c-like crystal curly language lightweight ruby
Last synced: 16 Apr 2025
https://github.com/geopjr/libadwaita.cr
libadwaita bindings for Crystal
bindings crystal gtk libadwaita
Last synced: 30 Apr 2025
https://github.com/Sija/ipaddress.cr
A Crystal library to handle IPv4 and IPv6 addresses in a modern and productive way.
Last synced: 27 Mar 2025
https://github.com/sija/ipaddress.cr
A Crystal library to handle IPv4 and IPv6 addresses in a modern and productive way.
Last synced: 08 Oct 2025
https://github.com/wout/rosetta
A blazing fast internationalization (i18n) library for Crystal with compile-time key lookup.
crystal crystal-lang i18n internationalization kemal l10n language locale localization luckyframework translation
Last synced: 07 May 2025
https://github.com/crystal-ameba/vscode-crystal-ameba
Ameba extension for Visual Studio Code
ameba crystal linter vscode vscode-extension
Last synced: 30 Aug 2025
https://github.com/sija/retriable.cr
Retriable.cr is a simple DSL to retry failed code blocks
Last synced: 13 Apr 2025
https://github.com/didactic-drunk/zstd.cr
Crystal bindings to the Zstandard (zstd) compression library
compression-library crystal crystal-bindings zstandard zstd
Last synced: 14 Apr 2025
https://github.com/Sija/retriable.cr
Retriable.cr is a simple DSL to retry failed code blocks
Last synced: 27 Mar 2025
https://github.com/GeopJr/libadwaita.cr
libadwaita bindings for Crystal
bindings crystal gtk libadwaita
Last synced: 22 Oct 2025
https://github.com/oprypin/crystal-chipmunk
Crystal bindings to Chipmunk, a fast and lightweight 2D game physics library
bindings chipmunk crystal physics-engine
Last synced: 25 Jul 2025
https://github.com/kojix2/deepl-cli
A fast and lightweight CLI for DeepL
cli crystal crystal-lang deepl terminal translation translations translator
Last synced: 11 Oct 2025
https://github.com/mamantoha/nanoid.cr
Crystal implementation of Nanoid, secure URL-friendly unique ID generator.
Last synced: 30 Apr 2025
https://github.com/mamantoha/http_proxy
A HTTP Proxy server and client written in Crystal
crystal hacktoberfest http http-proxy http-server proxy-client proxy-server
Last synced: 05 Feb 2026
https://github.com/josacar/triki
Mysql, PostgreSQL and SQL dump obfuscator aka anonimizer
crystal crystal-lang crystal-language crystal-shard database database-dump hacktoberfest mysql mysqldump obfuscator postgresql shards sql sqlserver
Last synced: 23 Aug 2025
https://github.com/icyleaf/swagger
Swagger contains a OpenAPI / Swagger universal documentation generator and HTTP server handler.
crystal crystal-api-document crystal-http-handler swagger swagger-documentation swagger-generator
Last synced: 05 Oct 2025
https://github.com/crystal-lang-tools/crystal-ide
Crystal Language editor support for VSCode
Last synced: 14 Nov 2025
https://github.com/hakatashi/ac-library.cr
Port of ac-library implemented in Crystal Programming Language
ac-library algorithms atcoder atcoder-library competitive-programming crystal data-structures
Last synced: 06 Apr 2025
https://github.com/papierkorb/torrent
A BitTorrent library in pure Crystal
bittorrent crystal dht torrent
Last synced: 11 May 2025
https://github.com/nedpals/sharn
Managing shards made easier.
cli crystal helper package-manager shards
Last synced: 04 Apr 2025
https://github.com/dylanljones/lattpy
Simple and efficient Python package for modeling d-dimensional Bravais lattices in solid state physics.
bravais bravais-lattice computational-physics crystal high-dimensional lattice nearest-neighbors neighbors physics python solid-state-physics
Last synced: 07 Apr 2025
https://github.com/naqvis/crystar
Crystal language Tar Module implements access to tar archives.
crystal crystal-lang crystal-language tar tarball
Last synced: 14 Apr 2025
https://github.com/crimson-knight/i18n.cr
Internationalization API ( i18n ) for Crystal!
crystal i18n internationalization language localization translation
Last synced: 08 May 2025
https://github.com/stephannv/blueprint
Write HTML in plain Crystal
crystal dsl hacktoberfest html oop
Last synced: 07 May 2025
https://github.com/imdrasil/hermes.cr
Datamapper like Crystal ORM and adapter for Elasticsearch
crystal datamapper elastic elasticsearch
Last synced: 07 May 2025
https://github.com/nilsding/agentsmith
🕴 An IRC server that is actually a Matrix client. Use your favourite IRC client to communicate with the Matrix.
crystal irc-server lolwut matrix-client matrix-org
Last synced: 04 May 2025
https://github.com/rx14/camo.cr
A crystal version of atmos/camo, faster and with better request lifecycle tracing
camo-proxy crystal daemon images proxy ssl
Last synced: 13 May 2025
https://github.com/mamantoha/shards-info
Source code of https://shards.info/
crystal crystal-shards github gitlab hacktoberfest
Last synced: 10 Apr 2025
https://github.com/grottopress/mel
A scalable asynchronous event-driven jobs engine
background-jobs cron-jobs crystal instant-jobs message-queue periodic-jobs redis task-scheduler
Last synced: 22 Apr 2025
https://github.com/faustinoaq/crystal-windows-installer
Installer for Crystal on Bash on Windows
Last synced: 05 Mar 2026
https://github.com/mechmicroman/defdap
A python library for correlating EBSD and HRDIC data
crystal defdap ebsd hrdic manchester strain
Last synced: 17 Jan 2026
https://github.com/GrottoPress/mel
A scalable asynchronous event-driven jobs engine
background-jobs cron-jobs crystal instant-jobs message-queue periodic-jobs redis task-scheduler
Last synced: 15 Mar 2025
https://github.com/crystal-linux/jade-gui
MOVED TO https://git.getcryst.al/crystal/software/jade-gui
crystal gtk4 gui hacktoberfest libadwaita
Last synced: 14 Jul 2025
https://github.com/geolessel/trello-cli
It's Trello, but snappy!
cli command-line command-line-tool crystal crystal-lang crystal-language homebrew ncurses trello
Last synced: 04 Mar 2026
https://github.com/papierkorb/cute
An event-centric publisher/subscribe model for objects inspired by the Qt framework
crystal event-driven events hooking middleware
Last synced: 30 Apr 2025
https://github.com/obskyr/dazzlie
Encode and decode graphics from a variety of retro video game systems!
crystal disassembly game-boy game-boy-color game-development graphics retro rom-hacking
Last synced: 15 Jul 2025
https://github.com/naqvis/crystal-html5
Crystal implementation of HTML5-Compliant Tokenizer and Parser with XPath & CSS Selector support
crystal crystal-lang crystal-language crystal-shard css-selectors html-parser html-tokenizer html5 xpath2
Last synced: 07 May 2025
https://github.com/blacksmoke16/CrSerializer
Extensible annotation based serialization/deserialization library
annotations crystal json serialization serializer yaml
Last synced: 27 Mar 2025
https://github.com/crystal-linux/jade
MOVED TO https://git.getcryst.al/crystal/software/jade
Last synced: 14 Jul 2025
https://github.com/Sija/any_hash.cr
Better JSON::Any for Crystal
crystal data-structures hash json manipulation yaml
Last synced: 27 Mar 2025
https://gitlab.com/arctic-fox/spectator
Feature-rich testing framework for Crystal inspired by RSpec.
bdd crystal hacktoberfest rspec spec testing
Last synced: 27 Mar 2025
https://github.com/imdrasil/crymagick
A crystal wrapper for ImageMagick command line.
crystal image-processing imagemagick imagemagick-wrapper
Last synced: 07 May 2025
https://github.com/marceloboeira/spotify.cr
:headphones: A Crystal wrapper for the Spotify Web API
Last synced: 02 May 2025
https://github.com/sija/any_hash.cr
Better JSON::Any for Crystal
crystal data-structures hash json manipulation yaml
Last synced: 07 May 2025
https://github.com/straight-shoota/sass.cr
Compile Sass/SCSS to CSS in Crystal (libsass binding)
crystal libsass-wrapper sass scss
Last synced: 13 Jun 2025
https://github.com/crystal-community/bloom_filter
Bloom filter implementation in Crystal lang
Last synced: 13 Aug 2025
https://github.com/NeuraLegion/wafalyzer
Web Application Firewall (WAF) Detector
cli crystal detection fingerprinting firewall shard waf
Last synced: 14 May 2025
https://github.com/neuralegion/wafalyzer
Web Application Firewall (WAF) Detector
cli crystal detection fingerprinting firewall shard waf
Last synced: 22 Jul 2025
https://github.com/thewalkingtoast/mpngin
A simple and fast URL shortener with built in stats.
crystal crystal-language redis url-shortener
Last synced: 30 Jul 2025
https://github.com/smacker/libgit2.cr
Crystal-lang binding to libgit2 with interface similar to rugged
crystal crystal-lang git libgit2
Last synced: 30 Apr 2025
https://github.com/ysbaddaden/posix
POSIX/C bindings generator for the Crystal programming language
Last synced: 26 Apr 2025
https://github.com/miketheman/statsd.cr
A statsd client library for Crystal.
crystal datadog monitoring statsd
Last synced: 11 Sep 2025
https://github.com/selleo/crystular
Crystal regex tester http://www.crystular.org/
crystal crystal-lang crystular kemal regex regular-expressions tester
Last synced: 12 May 2025
https://github.com/westonganger/form_builder.cr
Dead simple HTML form builder for Crystal with built-in support for many popular UI libraries such as Bootstrap
bootstrap crystal crystal-lang form-builder html html-form html-form-builder
Last synced: 16 Mar 2026
https://github.com/bmulvihill/dispatch
Dispatch - in memory asynchronous job processing
Last synced: 27 Mar 2025
https://github.com/stumpycr/stumpy_core
Core components for working with images
computer-graphics crystal image-processing
Last synced: 13 Jul 2025
