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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/novika-lang/novika

🪱 Novika is a free-form, moldable, interpreted programming language

crystal interpreter language novika programming-language repl

Last synced: 09 Apr 2025

https://github.com/Sija/ksuid.cr

Crystal implementation of K-Sortable Globally Unique IDs

coordination crystal ksuid unique-id uuid

Last synced: 27 Mar 2025

https://github.com/crystallabs/maildir.cr

Crystal library for reading and writing files in the Maildir file structure

crystal crystal-lang maildir maildir-format maildir-structure

Last synced: 10 Sep 2025

https://github.com/randomstate/openssl_ext

Crystal bindings for OpenSSL RSA

crystal openssl rsa

Last synced: 15 Apr 2025

https://github.com/RomainFranceschini/quartz

Quartz - A Crystal Modeling & Simulation framework

crystal discrete-event dsde modeling multipdevs pdevs quartz simulation

Last synced: 14 May 2025

https://github.com/crisward/mailer

Simple Email Sending Client for Mailgun & Sendgrid services in crystal

crystal email mailgun sendgrid

Last synced: 22 Oct 2025

https://github.com/hugoabonizio/event_emitter.cr

:loudspeaker: Idiomatic asynchronous event-driven architecture for Crystal

asynchronous crystal eventemitter events

Last synced: 27 Jul 2025

https://github.com/akiicat/m3u8

Generate and parse m3u8 playlists for HTTP Live Streaming (HLS) in Crystal.

crystal generator m3u8 parser

Last synced: 12 Apr 2025

https://github.com/swag666baby/bard

bard is a pornographic robot for discord developed in crystal and using my nsfw-api

bot crystal crystal-shard discord discord-bot nsfw nsfw-bot

Last synced: 12 May 2025

https://github.com/watzon/subnet

Crystal library for working with IPv4 and IPv6 addresses

crystal crystal-language ip ipv4 ipv6 subnet subnetting

Last synced: 27 Feb 2026

https://github.com/Sija/climate.cr

Tiny tool to make your CLI output 🌈 coloured

cli crystal

Last synced: 13 May 2025

https://github.com/ddfreyne/inari

A collection of games written in Crystal

crystal game

Last synced: 04 Mar 2025

https://github.com/denisdefreyne/inari

A collection of games written in Crystal

crystal game

Last synced: 20 Mar 2025

https://github.com/woodruffw/notify.cr

A Crystal library for desktop notifications.

crystal dbus desktop-notifications

Last synced: 26 Jun 2025

https://github.com/jgaskins/datadog

Datadog client for APM tracing and metrics in Crystal

apm crystal datadog distributed-tracing instrumentation metrics monitoring observability

Last synced: 12 May 2025

https://github.com/sija/climate.cr

Tiny tool to make your CLI output 🌈 coloured

cli crystal

Last synced: 12 May 2025

https://github.com/blacksmoke16/assert

Extensible annotation based object validation library

annotations crystal validation

Last synced: 27 Mar 2025

https://github.com/geocrystal/dijkstra

Dijkstra's algorithm using a priority queue in Crystal

crystal dijkstra dijkstra-algorithm priority-queue

Last synced: 03 May 2025

https://github.com/athena-framework/event-dispatcher

A Mediator and Observer pattern event library

component crystal

Last synced: 21 Apr 2025

https://github.com/epergo/sublimelinter-contrib-ameba

Sublime Linter for Ameba

ameba crystal linter sublime

Last synced: 12 Sep 2025

https://github.com/ice1000/oi-codes

:closed_lock_with_key: Solutions for online code challenges. Don't be evil.

acm acm-icpc algorithm algorithm-challenges algorithms c cpp crystal dart elixir haskell javascript oi ruby rust solutions typescript

Last synced: 18 Mar 2025

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

Crystal C bindings for libcurl

crystal curl libcurl

Last synced: 08 Oct 2025

https://github.com/robacarp/keimeno

A lightweight text user interface library in Crystal

crystal demo mud telnet tui

Last synced: 12 May 2025

https://github.com/g3ortega/vscode-crystal

THIS IS A DEPRECATED REPO: Please check crystal-lang-tools/vscode-crystal-lang

crystal vscode

Last synced: 14 Nov 2025

https://github.com/lipanski/keepass

Keepass KDBX v2/v3 parser for Crystal

crystal crystal-lang kdbx keepass parse

Last synced: 12 May 2025

https://github.com/neuralegion/tensorflow.cr

TensorFlow bindings in Crystal

crystal tensorflow tensorflow-bindings

Last synced: 07 May 2025

https://github.com/q9f/rlp.cr

a native library implementing recursive length prefixes purely for the crystal language.

crystal crystal-language ethereum marshalling native-library rlp serialization transaction

Last synced: 07 May 2025

https://github.com/thatsjustcheesy/parsem

Parsec-like parser combinators for Crystal

crystal parsec parser parser-combinators

Last synced: 14 Jul 2025

https://github.com/superstar54/weas

WEAS is JavaScript library to visualize and manipulate the atomic structures directly in the web browser.

3d crystal isosurface manipulation molecule three-js visualization

Last synced: 28 Jan 2026

https://github.com/skateman/silvio

VPN-over-WebSocket

crystal networking tun vpn websockets

Last synced: 12 Apr 2025

https://github.com/veelenga/shorturl.cr

A tiny library to use URL shortening services

crystal shorturl

Last synced: 17 Aug 2025

https://github.com/sqids/sqids-crystal

Official Crystal port of Sqids. Generate short unique IDs from numbers.

crystal hashids id id-generator short-id short-url sqids uid unique-id unique-id-generator

Last synced: 04 Oct 2025

https://github.com/maiha/redis-cluster.cr

redis-cluster library for Crystal

crystal redis redis-cluster

Last synced: 14 Aug 2025

https://github.com/petoem/breakout.cr

Breakout Game in Crystal

breakout crsfml crystal game sfml

Last synced: 12 Jan 2026

https://github.com/crystal-data/gr.cr

Crystal wrapper for the GR framework

charts crystal data-visualization plotting

Last synced: 07 Sep 2025

https://github.com/vladfaust/tele.cr

A convenient Telegram Bot framework 🤖

crystal telegram

Last synced: 02 May 2025

https://github.com/marghidanu/docr

Crystal library for Docker Engine API

crystal docker docker-engine-api

Last synced: 16 Jun 2025

https://github.com/crenv/crystal-build-cr

a plugin for crenv which provides an installation command

crystal crystal-lang

Last synced: 01 Apr 2025

https://github.com/osfx/ocean_kit

Digital Ocen v2 API Client

api-client crystal digitalocean v2

Last synced: 02 May 2025

https://github.com/stephendolan/decorator

A simple Crystal shard for decorating objects

crystal crystal-lang decorator decorator-pattern decorators

Last synced: 12 May 2025

https://github.com/wout/base_x

A Crystal shard for base encoding / decoding of any given alphabet with optional bitcoin-style leading zero compression.

base base11 base2 base32 base36 base45 base58 base62 base67 base8 basex bitcoin crystal decode decoder encode encoder encoding flicker ripple

Last synced: 07 May 2025

https://github.com/oprypin/crystal-dbus

Crystal bindings to D-Bus

bindings crystal dbus

Last synced: 07 May 2025

https://github.com/neuralegion/blue_cr

BlueZ bluetooth binding in Crystal

bluetooth bluez crystal

Last synced: 07 May 2025

https://github.com/freyamade/nocturne

[Backburner] Crystal / Amber Framework Village Builder web application

amber-framework crystal dnd5e nocturne village-building webapp

Last synced: 22 Apr 2025

https://github.com/molnarmark/jsontocr

🔮 JSON to Crystal JSON Mappings Converter

crystal crystal-lang crystal-language json types

Last synced: 13 Jun 2025

https://github.com/huacnlee/html-pipeline.cr

HTML processing filters and utilities for Crystal.

crystal html-pipeline markdown

Last synced: 03 Sep 2025

https://github.com/ysbaddaden/sql

SQL query builder for Crystal

crystal database mysql postgresql sql sqlite3

Last synced: 10 Oct 2025

https://github.com/s-you/dpdk.cr

Crystal bindings to Intel's DPDK at wire rate packet processing.

c crystal dpdk

Last synced: 01 Aug 2025

https://github.com/crystal-loot/webdrivers.cr

Manage your Selenium Webdrivers with Crystal

crystal selenium webdrivers

Last synced: 11 May 2025

https://github.com/papierkorb/json_rpc

JSON-RPC client and server library

crystal json-rpc network rpc

Last synced: 30 Apr 2025

https://github.com/firejox/fftw.cr

FFTW binding in Crystal

crystal fft

Last synced: 16 Jan 2026

https://github.com/microgit-com/lucky_encrypted

attribute_encrypted in Crystal for Lucky

crystal encryption lucky-framework

Last synced: 27 Mar 2025

https://github.com/kemalyst/kemalyst-generator

Rails like command line for Kemalyst

crystal kemalyst kemalyst-generator

Last synced: 27 Mar 2025

https://github.com/veelenga/rainbow-spec

Rainbow spec formatter for Crystal

crystal rainbow specs

Last synced: 17 Mar 2025

https://github.com/nin93/alea

Repeatable pseudo-random sampling, CDF over most known probability distributions.

cdf crystal crystal-lang cumulative-distribution-function prng random random-draw random-generation random-number-generators

Last synced: 27 Feb 2026

https://github.com/z64/discordcr-middleware

A simple extension to discordcr, for webserver-like middlewares. Stock middleware ready to use.

crystal discord-bot discordcr discordcr-middleware

Last synced: 17 Aug 2025

https://github.com/c910335/crie

Compile-time Trie in Crystal

crystal trie

Last synced: 27 Mar 2025

https://github.com/sija/serialport.cr

Crystal bindings for libserialport: cross-platform library for accessing serial ports.

crystal serial-ports

Last synced: 19 Jun 2025

https://github.com/Sija/gphoto2-web

REST API for libgphoto2

api camera crystal gphoto2 libgphoto2 photography rest web

Last synced: 13 May 2025

https://github.com/faustinoaq/secrets

Useful to get input on noecho, secrets, passwords, token, hints

crystal password secrets

Last synced: 12 May 2025

https://github.com/treagod/marten-turbo

Enhance your Marten app with dynamic updates using Turbo Frames!

crystal frontend hotwire-turbo marten web

Last synced: 07 May 2025

https://github.com/taylorfinnell/retrycr

Retry blocks of Crystal code

crystal crystal-language crystal-shard

Last synced: 27 Oct 2025

https://github.com/ejmeitz/simplecrystals.jl

An interface for generating simple crystal structures for molecular dynamics simulations.

atomsbase bravais-lattice crystal julia molecular-dynamics simulation solid-state-physics

Last synced: 13 Jul 2025

https://github.com/martenframework/realworld

A RealWorld application built with Marten.

crystal crystal-lang demo demo-app framework marten realworld web

Last synced: 07 May 2025

https://github.com/olbat/icu.cr

A Cystal binding & wrapper to the ICU library

crystal globalization icu internationalization

Last synced: 12 May 2025

https://github.com/stephendolan/lucky_diff

Show differences between scaffolded Lucky app versions!

crystal lucky luckyframework

Last synced: 12 May 2025

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

Flexible object (de)serialization library

component crystal

Last synced: 04 Jul 2025

https://github.com/alexherbo2/snippet.cr

Code snippets

crystal snippets

Last synced: 02 Aug 2025

https://github.com/crystal-ameba/ameba.el

An Emacs interface to Ameba

ameba convenience crystal emacs emacs-package linter

Last synced: 06 May 2025

https://github.com/geopjr/pog

A faster npm run & npx

crystal npm npx pnpm yarn

Last synced: 10 Jun 2025

https://github.com/malina/metascraper

Metascraper is a Crystal library for web scraping.

crystal scrape scraped-data

Last synced: 15 Mar 2025

https://github.com/runwaylab/runway

A deployment controller for anything 🚀

controller crystal deployments runway

Last synced: 26 Jan 2026

https://github.com/anamba/public_suffix.cr

Crystal language implementation of public suffix check

crystal crystal-lang crystal-language public-suffix-list shard

Last synced: 12 May 2025

https://github.com/luckyframework/carbon_smtp_adapter

An smtp adapter for the carbon email library

carbon crystal email smtp

Last synced: 11 Mar 2026

https://github.com/Sija/base62.cr

Base62 encoder/decoder for Crystal

base62 conversion crystal encoding url-shortener

Last synced: 27 Mar 2025

https://github.com/sija/base62.cr

Base62 encoder/decoder for Crystal

base62 conversion crystal encoding url-shortener

Last synced: 05 Oct 2025

https://github.com/osfx/open_exchange_rates

A library for Open Exchange Rates API

api api-client crystal currencies openexchangerates

Last synced: 02 May 2025

https://github.com/spider-gazelle/crystal-openai

OpenAI ChatGPT, GPT-3, GPT-4, DALL·E, Whisper API Client for Crystal

chatgpt-api chatgpt3 chatgpt4 crystal crystal-lang dall-e openai openai-whisper

Last synced: 07 May 2025

https://github.com/drujensen/delimiter_tree

A crystal-lang tree structure that is built using a delimiter.

crystal

Last synced: 12 May 2025

https://github.com/jgaskins/mpsc

Multi-Producer/Single-Consumer channels in Crystal

channels crystal

Last synced: 12 May 2025

https://github.com/faustinoaq/sentry-run

Use Sentry shard for reload your app

crystal monitor

Last synced: 12 May 2025

https://github.com/crystal-data/crystal_kernel

Python wrapper kernel for Crystal

crystal jupyter

Last synced: 11 Aug 2025

https://github.com/robacarp/icmp.cr

A terse implementation of ICMP Ping in Crystal

crystal icmp ping shard

Last synced: 12 May 2025

https://github.com/codenoid/kemal-mysql-blog

Crystal, Kemal, MySQL, Blog

blog crystal kemal mysql

Last synced: 14 Mar 2026

Crystal Awesome Lists
awesome-crystal 432
Crystal Categories
Data Formats 73 Compression 70 Network Protocols 56 HTTP 50 Web Frameworks 32 Misc 29 Algorithms and Data structures 28 Testing 27 Logging and monitoring 25 Official Documentation Translations 24 Third-party APIs 23 C bindings 20 CLI Builders 19 Template Engine 18 Framework Components 15 Database Drivers/Clients 13 CLI Utils 12 Editor Plugins 11 Unofficial 10 Implementations/Compilers 9