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: 2026-06-16 00:06:54 UTC
- JSON Representation
https://github.com/aquaflamingo/crystal-books
Basic Book Keeping CLI in Crystal
accounting cli crystal crystal-lang crystal-language
Last synced: 05 Mar 2026
https://github.com/fukaoi/crystal-v8
V8 Javascript engine for Crystal.
crstal-lang crystal javascript v8
Last synced: 18 Apr 2026
https://github.com/senorprogrammer/sdns
A command-line DNS switcher for macOS: 'sdns switch google'.
Last synced: 24 Apr 2026
https://github.com/naqvis/json-xpath
Provide XPath support on JSON document
crystal crystal-lang crystal-language json json-xpath xpath2
Last synced: 27 Apr 2026
https://github.com/codenoid/chuck-norris-holy-quotes
An Chuck Norris Holy Quotes written in Crystal
Last synced: 21 Jul 2025
https://github.com/chris-huxtable/nongrata
Securely generates sanitized, aggregate, IP blacklists
blacklist blacklist-ips crystal crystal-language
Last synced: 04 Apr 2025
https://github.com/mamantoha/air_alert_map_ua_wallpaper
A CLI tool for setting the Air Raid Alert Map of Ukraine as a desktop background
crystal kde-plasma macos wallpaper-changer windows
Last synced: 07 May 2025
https://github.com/seanpm2001/bliss_browser_crystal
🌳️🌐️#️⃣️ The Bliss Browser Crystal language support module, allowing Crystal programs to be written in and ran within the browser.
bliss-browser bliss-browser-crystal bliss-browser-development bliss-browser-language-support bliss-browser-languages browser crystal crystal-lang crystal-language gpl3 gplv3 md txt web-browser web-development
Last synced: 05 Mar 2026
https://github.com/cadmiumcr/summarizer
A collection of summarizer algorithms
crystal crystal-lang crystal-language extractive-summarization kl-divergence luhn nlp sumbasic summarization summarizer
Last synced: 03 Mar 2025
https://github.com/asafschers/scorystal
Crystal Scoring API for PMML
crystal gbm gradient-boosting-classifier machine-learning pmml random-forest
Last synced: 16 Jun 2025
https://github.com/steffanperry/minetrain
AWS Lambda runtime for Crystal Lang
aws aws-lambda crystal crystal-lang crystal-language
Last synced: 29 Apr 2026
https://github.com/blockfrost/blockfrost-crystal
A Crystal SDK for the Blockfrost.io API
api api-client api-rest blockchain blockfrost cardano cardano-addresses cardano-client cardano-crystal-client crystal crystal-lang ipfs json-api nutlink
Last synced: 12 May 2025
https://github.com/imdrasil/glushkov
Extended mathematical shard
crystal data-structures mathematics
Last synced: 21 Jul 2025
https://github.com/botwayorg/botwaycr
Crystal client package for Botway.
bot botway crystal crystal-lang
Last synced: 26 Oct 2025
https://github.com/cagataycali/kemal-heroku-example
Kemal is super simple web framework powered Crystal lang. These repo show's how to use with heroku.
crystal deploy heroku heroku-button kemal kemalcr
Last synced: 02 Aug 2025
https://github.com/eltony81/easy_expression_eval
Math expression evaluator
crystal crystal-lang evaluator expression infix-notation math
Last synced: 30 May 2026
https://github.com/mohd-akram/plic
Website for sending one-time secret messages securely.
crystal messaging secret website
Last synced: 26 Jul 2025
https://github.com/kojix2/zenity.cr
Zenity wrapper for Crystal
crystal crystal-lang dialog zenity
Last synced: 19 Jul 2025
https://github.com/arandilopez/crystal_koans
A WIP Crystal Koans
crystal koans programming-exercises programming-language
Last synced: 25 Apr 2025
https://github.com/ne-sachirou/diff-with-json
diff with JSON structure.
crystal crystal-language diff json
Last synced: 19 Feb 2026
https://github.com/hugoabonizio/stemmer.cr
:scissors: English language stemmer for Crystal
crystal nlp porter-stemming-algorithm stemmer
Last synced: 29 Oct 2025
https://github.com/mrexox/lucky_swagger
Swagger API helper for Lucky Framework [WORK IN PROGRESS]
api crystal lucky lucky-framework swagger
Last synced: 31 Mar 2025
https://github.com/mjago/libmpg123
libmpg123 bindings for the Crystal Language
Last synced: 04 Jul 2025
https://github.com/rishavs/cove
Simple crud app using pure crystal. 0 frameworks and dependencies
crud crystal crystal-language crystallang tutorial webapp
Last synced: 13 Jun 2025
https://github.com/crystal-linux/tourmaline
Tourmaline is a (planned) agnostic, asynchronous and awesome installer framework
crystal hacktoberfest installer nu rust
Last synced: 15 Feb 2026
https://github.com/woodruffw/abbrev.cr
A straightforward port of Ruby's Abbrev to Crystal.
Last synced: 28 Mar 2025
https://github.com/nilsding/dradiwabo
A Telegram bot for notifying you about nice deals of a certain web site
bad-dragon crystal telegram-bot
Last synced: 31 Mar 2025
https://github.com/amberframework/heroku-buildpack-amber
Heroku Buildpack for Amber Framework
Last synced: 23 Jun 2025
https://github.com/blocknotes/gumbo-crystal
Crystal C bindings for Gumbo library
Last synced: 27 Mar 2025
https://github.com/mattboldt/cryptocompare-crystal
💎 💰 A Crystal Shard wrapper for the CryptoCompare API
btc btc-conversion cryptocompare cryptocurrency crystal ethereum
Last synced: 10 Apr 2025
https://github.com/szabgab/crystal-mine.cr
Analyzing all the source-code using the Crystal programming language
crystal crystal-lang crystal-language
Last synced: 02 Feb 2026
https://github.com/codenoid/lazy-mongo
Insert data to mongo from text plain or file
crystal crystal-language data database mongoclient mongodb
Last synced: 13 Apr 2026
https://github.com/ssvb/hunaftool
Automatic manipulation and conversion of Hunspell dictionary files
affix affix-rules compression crystal decompression dictionary hunspell ruby spellchecking
Last synced: 07 Jul 2025
https://github.com/mmacia/query-builder.cr
SQL query builder for Crystal language
crystal database dsl query-builder querybuilder sql sqlite3
Last synced: 14 May 2026
https://github.com/mjblack/telnet
A Crystal Shard for creating telnet servers and clients
crystal crystal-lang crystal-language crystal-shard shard telnet telnet-protocol
Last synced: 17 Mar 2026
https://github.com/bad-antics/nullkia
NullKia Mobile Security Framework - Tools in Nim, Crystal, V, D, Red, Odin, Haxe, Zig, Kotlin, Lua, PHP, Python | bad-antics | discord.gg/killers
android android-hacking baseband bootloader-unlock checkm8 crystal firmware-hacking haxe infosec ios-jailbreak mobile-security nim nullkia nullsec odin-lang penetration-testing samsung-knox security-framework unusual-languages vlang
Last synced: 31 Jan 2026
https://github.com/cocol-project/ccl-pow
Bitcoin style Proof of Work library in Crystal
bitcoin blockchain cocol crystal crystal-lang crystal-language library proof-of-work
Last synced: 23 Jun 2025
https://github.com/dougeverly/jsonfeed.cr
Crystal Implemntation of JSON Feed
crystal crystallang jsonfeed jsonfeed-generator
Last synced: 30 Mar 2025
https://github.com/lucasintel/ukrainian
🇺🇦 Ukrainian language tooling for Crystal
crystal cyrillic transliteration ukraine ukrainian ukrainian-language
Last synced: 29 Aug 2025
https://github.com/cadmiumcr/glove
Pure Crystal implementation of Global Vectors for Word Representation (GloVe)
cadmium crystal global-vectors glove machine-learning ml natural-language-processing nlp word-embeddings
Last synced: 27 Oct 2025
https://github.com/creadone/cocoon
Wrapper for IO such as third-party API calls to prevent sudden blow up the main program
Last synced: 08 Jul 2025
https://github.com/grottopress/lester
A low-level API client for LXD
crystal devops http-client lxd rest-api
Last synced: 22 Apr 2025
https://github.com/truemail-rb/truemail-crystal-client
Truemail web API client library for Crystal :package:
api-client crystal crystal-shard truemail truemail-api-client truemail-family truemail-rb
Last synced: 08 May 2025
https://github.com/toddsundsted/host_meta
A Web Host Metadata (https://tools.ietf.org/html/rfc6415) client for Crystal.
Last synced: 17 Feb 2026
https://github.com/cbrnrd/ezdb
🌌 An in memory database used for IPC
crystal daemon database interprocess-communication ipc nosql
Last synced: 25 Oct 2025
https://github.com/hentioe/multicore.cr
Convenient multi-process launcher for Crystal app
crystal crystal-lang multiprocessing
Last synced: 23 Aug 2025
https://github.com/waj/crystal-rancher
Rancher API client for Crystal
crystal crystal-lang rancher rancher-api
Last synced: 01 Jun 2026
https://github.com/molovo/tiny
A Crystal module to help you build multi-threaded HTTP micro-services
Last synced: 21 Aug 2025
https://github.com/jgaskins/pennant
Feature flags in Crystal applications with pluggable backends (in-memory and Redis currently supported)
crystal feature-flags feature-toggles
Last synced: 19 Oct 2025
https://github.com/woodruffw/i3.cr
A Crystal interface to the i3 window manager.
Last synced: 23 Jul 2025
https://github.com/codenoid/crystal-mysql-crud-example
Crystal MySQL CRUD Example
Last synced: 14 Apr 2026
https://github.com/cadmiumcr/wordnet
Pure crystal implementation of Stanford NLPs WordNet
cadmium crystal crystal-lang machine-learning ml natural-language-processing nlp stanford-nlp wordnet
Last synced: 10 Apr 2025
https://github.com/picatz/argz
🐉 Command-line application library for Crystal
Last synced: 16 Oct 2025
https://github.com/geocrystal/convex_hull
Crystal implementation of finding the convex hull of a finite set of points in the plane
convex-hull convex-hull-algorithms crystal graham-scan hacktoberfest jarvis-march
Last synced: 09 Jun 2026
https://github.com/fujikawahiroaki/atcoder-diet
その日に解いたAtCoder問題のスコアの合計で翌日の摂取可能カロリーを決定するクソWebアプリ
Last synced: 09 Jun 2026
https://github.com/cooperhammond/ydl-binaries
:sparkles: A crystal shard that downloads binaries for ffmpeg and youtube-dl
binaries cross-platform crystal ffmpeg ydl-binaries youtube-dl
Last synced: 10 May 2026
https://github.com/maiha/redisniffer
Sniff redis packets and summarize count of commands
Last synced: 29 Apr 2026
https://github.com/gtramontina/ghooks.cr
simple git hooks for crystal
crystal crystal-lang crystal-language crystal-shard crystal-shards git hooks terminal
Last synced: 02 May 2026
https://github.com/konstantine-v/amber-ticketing
A ticketing application for use with clients. Created with the amber framework.
amber amber-framework crystal crystal-lang crystal-language ticketing-system
Last synced: 14 Oct 2025
https://github.com/citizen428/bloom_filter
Bloom filters for Crystal
bloom-filter bloom-filters crystal
Last synced: 04 Jun 2026
https://github.com/sam0x17/video-manager
a tool for automatically optimizing files in your video library using ffmpeg
crystal crystal-shard crystal-shards ffmpeg ffmpeg-wrapper plex plex-media-server video-encoding
Last synced: 07 May 2025
https://github.com/lucasintel/wayback.cr
Internet Archive's ⏳Wayback Machine interface for Crystal
crystal data-hoarder internet-archive osint wayback-machine
Last synced: 04 Jun 2026
https://github.com/doughsay/crystal-open-simplex-noise
2D, 3D, and 4D open simplex noise in crystal.
Last synced: 13 May 2025
https://github.com/alex-lairan/mancala
Mancala is a Crystal SFML lib for Activity Management
crsfml crystal crystal-lang sfml sfml2 shards
Last synced: 30 Mar 2025
https://github.com/konstantine-v/crfetch
NeoFetch written in Crystal - WIP
cli crystal crystal-lang crystal-language fetch
Last synced: 10 Aug 2025
https://github.com/andyw8/checklists
Basic CRUD example app written using Lucky framework (Crystal)
crystal crystal-language lucky
Last synced: 28 Mar 2025
https://github.com/cocol-project/probfin
Probabilistic Finality for Crystal
blockchain cocol crystal crystal-lang crystal-language dag finality probabilistic-finality topsort
Last synced: 08 Aug 2025
https://github.com/changjoo-park/amber-microblog
Microblog example using Amber Framework
amber amber-framework blog crystal
Last synced: 10 Jun 2026
https://github.com/oprypin/spec-assert
Assert macro for Crystal that lets you write specs naturally without a special expectation DSL
Last synced: 24 Jun 2025
https://github.com/krthr/costelog-crystal
Get random sentence from Costeño idioms for your log.
costelog crystal crystal-language shard
Last synced: 20 Apr 2025
https://github.com/r-unic/roblox-cr
A Crystal-to-Luau compiler for Roblox
compiler crystal lua luau roblox source-to-source transpiler
Last synced: 30 Apr 2025
https://github.com/asterite/wanikani
Provides access to WaniKani's API in Crystal: https://www.wanikani.com/api
crystal japanese japanese-language japanese-study wanikani
Last synced: 07 Oct 2025
https://github.com/chris-huxtable/hostname.cr
Encapsulates hostnames making them more convenient.
crystal crystal-lang crystal-language hostname shards
Last synced: 31 Jul 2025
https://github.com/mamantoha/countdown-crystal
A simple Crystal library for calculating and producing an accurate, intuitive description of the timespan between two Time instances.
Last synced: 14 Jul 2025
https://github.com/toddsundsted/public_suffix
A small Crystal library designed to make the Public Suffix List (https://publicsuffix.org/) easier to use.
Last synced: 15 Jul 2025
https://github.com/athena-framework/dotenv
Registers environment variables from a .env file
Last synced: 17 Mar 2026
https://github.com/myst-lang/mtenv
Version manager for Myst language, inspired by rbenv and others.
crystal environment-manager myst-lang version-control version-manager
Last synced: 13 Aug 2025
https://github.com/opensas/json-mappings-generator
Utility library for Crystal lang to automatically generate the source of JSON-mapped clases to populate objects from a json string.
crystal json json-schema mapping
Last synced: 01 Feb 2026
https://github.com/ivo-balbaert/crystal_from_rbe
Converting the Ruby scripts from "Ruby By Example - Kevin Baird" to Crystal
crystal crystal-language crystallang
Last synced: 30 Mar 2025
https://github.com/crystal-garage/kemal-session-redis-engine
Redis store for kemal-session
Last synced: 18 Feb 2026
https://github.com/seanpm2001/snu_3d_universe_milkyway_solarsystem_uranus
The (Milky Way/Solar System) Uranus map center for the SNU Universe project (in 3D mode)
crystal crystal-lang gpl3 gplv3 mapping maps md milky-way snu snu-3d snu-3d-universe snu-development snu3d-universe snu3duniverse snuuniverse solar-system txt uranus uranus-planet
Last synced: 27 Apr 2026
https://github.com/anamba/adventofcode2018
AoC in Crystal
advent-of-code advent-of-code-2018 crystal crystal-lang crystal-language
Last synced: 01 Jul 2025
https://github.com/mamantoha/energy-ua-info
A command-line tool that fetches and displays scheduled electricity outage information for Ukrainian cities
Last synced: 02 Feb 2026