An open API service indexing awesome lists of open source software.

Crystal

Crystal is a programming language with friendly syntax, static type checking and modern stdlib. It compiles into efficient, easy-to-distribute native code.

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'.

crystal dns macos

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

chucknorris 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/steffanperry/minetrain

AWS Lambda runtime for Crystal Lang

aws aws-lambda crystal crystal-lang crystal-language

Last synced: 29 Apr 2026

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/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/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/martenframework/marten-mailgun-emailing

A Mailgun emailing backend for the Marten web framework.

crystal email emailing framework mailgun marten web

Last synced: 01 Aug 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/martenframework/marten-sendgrid-emailing

A Sendgrid emailing backend for the Marten web framework.

crystal email emailing framework marten sendgrid web

Last synced: 01 Aug 2025

https://github.com/mjago/libmpg123

libmpg123 bindings for the Crystal Language

crystal mp3 mp3-player

Last synced: 04 Jul 2025

https://github.com/lipanski/kilometric

A fast stats aggregation service written in Crystal using Redis streams as a data store.

crystal metrics redis stats statsd

Last synced: 04 May 2026

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.

abbrev 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

crystal

Last synced: 23 Jun 2025

https://github.com/blocknotes/gumbo-crystal

Crystal C bindings for Gumbo library

crystal gumbo

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

api crystal fibers

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/toddsundsted/host_meta

A Web Host Metadata (https://tools.ietf.org/html/rfc6415) client for Crystal.

crystal host-meta

Last synced: 17 Feb 2026

https://github.com/d-shwagginz/wa-cr

A Crystal library to read and write .wad and lump files

crystal doom library lump wad

Last synced: 02 Jan 2026

https://github.com/mdwagner/pigpio.cr

Crystal bindings to pigpio

crystal crystal-lang pigpio

Last synced: 29 Apr 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

crystal http microservice

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.

crystal i3

Last synced: 23 Jul 2025

https://github.com/codenoid/crystal-mysql-crud-example

Crystal MySQL CRUD Example

crud crystal example mysql

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

command-line 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

atcoder crystal joke kemal

Last synced: 09 Jun 2026

https://github.com/david50407/csmli

Mini-Lisp interpreter

crystal mini-lisp-interpreter

Last synced: 07 Jul 2025

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

crystal packet-sniffer redis

Last synced: 29 Apr 2026

https://github.com/athena-framework/orm

Does ORM stuff

crystal

Last synced: 18 Jun 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/wout/packlink.cr

Packlink API client for Crystal https://pro.packlink.com

api courrier crystal packlink parcels send ship shipping tracking

Last synced: 07 May 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.

crystal noise opensimplex

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/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

crystal spec

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.

countdown-timer crystal time

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.

crystal public-suffix-list

Last synced: 15 Jul 2025

https://github.com/athena-framework/dotenv

Registers environment variables from a .env file

component crystal

Last synced: 17 Mar 2026

https://github.com/mamantoha/crystal-exif

Crystal bindings for libexif

bindings crystal exif libexif

Last synced: 04 Apr 2025

https://github.com/jaredsmithse/monzo.cr

API Wrapper for Monzo API

crystal monzo

Last synced: 05 Apr 2025

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/postmodern/pix_fmt.cr

A Crystal library for working with different pixel formats, such as RGB, RGBA, HSL, HSV, YUV, and YUYV.

buffer crystal pixel pixfmt wip

Last synced: 21 May 2026

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

crystal kemal redis session

Last synced: 18 Feb 2026

https://github.com/kyunal/ralike

A reddit-username-alike finder

analysis comments crystal pushshift reddit

Last synced: 26 May 2026

https://github.com/mamantoha/energy-ua-info

A command-line tool that fetches and displays scheduled electricity outage information for Ukrainian cities

cli crystal

Last synced: 02 Feb 2026