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awesome-crystal

https://github.com/veelenga/awesome-crystal
https://github.com/sara0871/awesome-crystal

Last synced: 5 days ago
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  • Algorithms and Data structures

    • crystalg - A Generic Algorithm Library
    • hash_ring - An Implementation of Consistent Hash Ring
    • aho_corasick - AhoCorasick algorithm
    • crystal-diff - A Crystal sequence differencing implementation
    • crystal-linked-list - Implementation of Linked List
    • crystaledge - A pure Vector Math library
    • crystalline - A collection of containers and algorithms
    • delimiter_tree - A tree structure that is built using a delimiter
    • edits.cr - Collection of edit distance algorithms
    • markov - Build Markov Chains and run Markov Processes
    • miller_rabin - Implements [Miller-Rabin](https://en.wikibooks.org/wiki/Algorithm_Implementation/Mathematics/Primality_Testing) algorithm to check if a number is prime
    • multiset.cr - Implementation of a multiset
    • murmur3 - Implementation of Murmur3 hash algorithm used by Cassandra
    • oak - A flexible Radix Tree implementation
    • radix - Radix Tree implementation
    • ternary_search_tree - Ternary Search Tree
    • text - A collection of text algorithms

  • Blockchain

  • Web Servers

    • IRC - #crystal-lang on Freenode
    • Crystal weekly newsletters
    • Google Group
    • IRC - #crystal-lang on Freenode
    • Metaruby - Crystal Forum on Metaruby
    • Reddit
    • Stackoverflow
    • fast-http-server - Super fast, zero configuration command line HTTP Server
    • prax.cr - Rack proxy server for development
    • salt - A Human Friendly Interface for HTTP server
    • serve - Command line static HTTP server
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode
    • IRC - #crystal-lang on Freenode

  • Data Formats

    • Gzip - readers and writers of gzip format (Crystal stdlib)
    • config.cr - Easy to use configuration format parser
    • crinder - Class based json renderer
    • dockerfile.cr - Dockerfile Parsing Library
    • front_matter.cr - Separates a files front matter from its content
    • maxminddb.cr - parsing MaxMindDB files, including the GeoIP2
    • zq - Command-line ZPL processor
    • CSV - parsing and generating for comma-separated values (Crystal stdlib)
    • INI - INI file parser (Crystal stdlib)
    • JSON - parsing and generating JSON documents (Crystal stdlib)
    • XML - parsing and generating XML documents (Crystal stdlib)
    • YAML - parsing and generating YAML documents (Crystal stdlib)
    • CSV - parsing and generating for comma-separated values (Crystal stdlib)
    • INI - INI file parser (Crystal stdlib)
    • JSON - parsing and generating JSON documents (Crystal stdlib)
    • XML - parsing and generating XML documents (Crystal stdlib)
    • YAML - parsing and generating YAML documents (Crystal stdlib)
    • crystal-toml - TOML parser
    • INI - INI file parser (Crystal stdlib)
    • JSON - parsing and generating JSON documents (Crystal stdlib)
    • XML - parsing and generating XML documents (Crystal stdlib)
    • CSV - parsing and generating for comma-separated values (Crystal stdlib)
    • Gzip - readers and writers of gzip format (Crystal stdlib)
    • YAML - parsing and generating YAML documents (Crystal stdlib)
    • CSV - parsing and generating for comma-separated values (Crystal stdlib)
    • Gzip - readers and writers of gzip format (Crystal stdlib)
    • INI - INI file parser (Crystal stdlib)
    • JSON - parsing and generating JSON documents (Crystal stdlib)
    • XML - parsing and generating XML documents (Crystal stdlib)
    • YAML - parsing and generating YAML documents (Crystal stdlib)

  • Implementations/Compilers

    • charly - Charly Programming Language
    • LinCAS-lang - A programming language for scientific computation
    • myst-lang - A practical, dynamic language designed to be written and understood as easily and efficiently as possible
    • runic-lang - In-design toy language
    • cltk - A crystal port of the Ruby Language Toolkit
    • cppize - Crystal-to-C++ transpiler
    • crisp - Lisp dialect implemented with Crystal
    • crow - Transpile/compile Crystal to [Flow](https://flow.org/)
    • mint-lang - A refreshing programming language for the front-end web
    • NuummiteOS - An OS written in Crystal as a Proof of Concept
    • zir - Realizes to write macros in any scripts into any languages
    • myst-lang - A practical, dynamic language designed to be written and understood as easily and efficiently as possible

  • Third-party APIs

    • hncr - A Hacker News API wrapper
    • nexmo-crystal - [Nexmo REST API](https://developer.nexmo.com/) client
    • aws-signer.cr - This library signs your HTTP requests using AWS v4
    • awscr-s3 - AWS S3 interface
    • awscr-signer - Sign HTTP::Request objects and generate presigned post forms
    • bugsnag.cr - Bugsnag exception notifier and sidekiq middleware
    • crystal-darksky - Wrapper for the [Dark Sky](https://darksky.net) API
    • crystal-github - Wrapper for the [Github](https://github.com/) API
    • crystal-monzo - A client for the [Monzo API](https://monzo.com/docs/)
    • crystal-swapi - Star Wars API (SWAPI) wrapper
    • crystal_slack - A tool that parses Slack slash commands or send incoming web hooks
    • dotacr - Wrapper for Valve's DotA API
    • GDAX - GDAX REST and WebSocket API Wrapper with request signing
    • gitlab.cr - GitLab API wrapper
    • google_maps_api - Google Maps API
    • mixpanel-crystal - A library for sending events to Mixpanel
    • ocean_kit - [Digital Ocean v2 API](https://developers.digitalocean.com/documentation/v2/) client
    • open_exchange_rates - A library to access [Open Exchange Rates](https://openexchangerates.org/) API
    • pinboard.cr - [Pinboard](https://pinboard.in) API
    • raven.cr - Raven is a client for [Sentry](https://github.com/getsentry/sentry)
    • slack.cr - A Slack [Real Time Messaging API](https://api.slack.com/rtm) WebSocket client library
    • spotify.cr - A library to access the Spotify API
    • tele.cr - A *convenient* wrapper for the Telegram Bot API
    • telegram_bot - A wrapper for the Telegram Bot API
    • twitter-crystal - A library to access the Twitter API
    • discordcr - A minimalist Discord API library
    • tourmaline - Yet another Telegram Bot API wrapper

  • Unofficial

  • Official Documentation Translations

  • Api Builders

  • C bindings

    • asound-cr - Bindings for ALSA/libasound
    • cairo-cr - Bindings for [Cairo](https://cairographics.org/) graphics library
    • crass - Bindings for libsass
    • crt.cr - Bindings for libncursesw and crt
    • crystal-gsl - GNU Scientific Library bindings
    • curl-crystal - Bindings for [libcurl](https://curl.haxx.se/libcurl/)
    • duktape.cr - Bindings for the [Duktape](https://github.com/svaarala/duktape) javascript engine
    • gphoto2.cr - Bindings for the [libgphoto2](http://www.gphoto.org/) library
    • icu.cr - Bindings for the [ICU](http://site.icu-project.org/) library
    • libnotify.cr - Bindings for Libnotify
    • pcap.cr - Bindings for libpcap
    • pledge.cr - Bindings for OpenBSD's `pledge(2)`
    • posix - POSIX/C bindings
    • soundfile - Bindings for [libsndfile](http://www.mega-nerd.com/libsndfile/) library
    • ssh2.cr - Bindings for libssh2 library
    • termbox-crystal - Bindings and extension library for [termbox](https://github.com/nsf/termbox) (terminal UI library)
    • x11-cr - X11 bindings
    • x_do.cr - Bindings for libxdo ([`xdotool`](https://github.com/jordansissel/xdotool))

  • Caching

    • bloom_filter - Implementation of Bloom filter
    • bojack - A non-reliable in-memory key-value store
    • cache-hash - A key/value store where entries expire after a specified interval
    • crystal-memcached - Implementation of a memcached client
    • Nuummite - A tiny persistent embedded key-value store

  • Cli Builders

    • admiral - A robust DSL for writing command line interfaces
    • cli - Library for building command-line interface applications
    • clicr - A simple declarative command line interface builder
    • clim - Slim command line interface builder
    • commander - Command-line interface builder
    • completion - Easy command line completion engine
    • optarg - Yet another library for parsing command-line options and arguments
    • OptionParser - command-line options processing (Crystal stdlib)
    • OptionParser - command-line options processing (Crystal stdlib)
    • OptionParser - command-line options processing (Crystal stdlib)
    • OptionParser - command-line options processing (Crystal stdlib)
    • OptionParser - command-line options processing (Crystal stdlib)

  • Cli Utils

    • cride - A light CLI text editor/IDE
    • dl - Simple utility for download files by URLs from list
    • noteesh - Notes and Todo list in command line
    • progress - [==..] Progress bar
    • progress_bar.cr - A simple and customizable progress bar
    • spinner - Terminal Spinner
    • terminal_table.cr - Simple ASCII table generator
    • todo - Todo list working in command line

  • Code Analysis and Metrics

    • trashman - A simple memory profiler for Crystal applications

  • Configuration

    • cr-dotenv - Loads .env file
    • habitat - Type safe configuration for your classes and modules
    • totem - Load and parse a configuration in JSON, YAML, dotenv formats

  • Converters

    • base62.cr - Base62 encoder/decoder, well suited for url-shortening
    • human_file_size.cr - JSON & YAML mapping converter for human file sizes in serialized data
    • money - Handling money and currency conversion with ease (almost complete port of [RubyMoney](https://github.com/RubyMoney/money))
    • moola - Library for dealing with money and conversion (inspired by [RubyMoney](https://github.com/RubyMoney/money))
    • ms - Library to easily convert various time formats to milliseconds and milliseconds to human readable format
    • sass.cr - Compile SASS/SCSS to CSS ([libsass](https://github.com/sass/libsass/) binding)
    • time_format.cr - Convert time in human readable format with ease
    • turkish-number - Turn integers into the Turkish words
    • wkhtmltopdf-crystal - Bindings / wrapper for libwkhtmltox (HTML to PDF / image converter)

  • Data Generators

    • faker - A library for generating fake data
    • hashids.cr - A library to generate YouTube-like ids from one or many numbers

  • Database Drivers/Clients

  • Database Tools

    • crecto-admin - Admin dashboard for Crecto and your database
    • micrate - Database migration tool
    • migrate - A simpler database migration tool with transactions
    • migro - A database migration tool that allows migrations to be specified in either YAML or raw SQL

  • Development Tools

    • guardian - File change watcher for Crystal and Non-Crystal libs
    • kemal-watcher - Kemal plugin to watch files and live-reload the browser
    • sentry - Watches src files, rebuilds/reruns application on file changes
    • sentry-run - Reload code changes using Sentry.run
    • Warden - Watches files, run command and a git command if succeed on file changes
    • watcher - Watch file changes using File.stat

  • Email

    • carbon - Fun, testable, and adapter-based email library
    • crystal-email - Simple e-mail sending library
    • CrystalEmail - A RFC compliant Email validator
    • devmail - A combined SMTP/POP3-server with volatile mail storage
    • sendgrid.cr - Simple Sendgrid Client

  • Environment Management

  • Examples and funny stuff

  • Feature Flipping

    • flipper - Feature flipping/flags/rollouts. Supports multiple backends

  • Framework Components

  • Game Development

    • cray - Bindings for [raylib](http://www.raylib.com/), an easy-to-use game development library
    • CrSFML - Bindings to [SFML](https://www.sfml-dev.org/) multimedia/game library
    • crystal-chipmunk - Bindings for [Chipmunk](http://chipmunk-physics.net/), a fast and lightweight 2D game physics library
    • inari - A collection of games using Glove as the game engine
    • mos_game - Mini Offline Singleplayer game
    • glove - A library for gaming development
    • inari - A collection of games using Glove as the game engine

  • GUI library

    • hedron - An extendable GUI library, with markup language capabilities
    • libui.cr - Bindings for [libui](https://github.com/andlabs/libui)
    • qt5.cr - Qt5 bindings for Crystal, based on Bindgen
    • hedron - An extendable GUI library, with markup language capabilities

  • HTML/XML Parsing

    • crystagiri - An Html Reader / parser like [Nokogiri](https://github.com/sparklemotion/nokogiri) Ruby gem
    • gumbo-crystal - Bindings for [Gumbo](https://github.com/google/gumbo-parser), an HTML5 parsing library made by Google
    • hq.cr - Simple wrapper for crystal-xml
    • modest - CSS selectors for HTML5 Parser myhtml
    • myhtml - Fast HTML5 Parser

  • HTTP

  • Image processing

    • magickwand-crystal - Bindings for [MagickWand](https://www.imagemagick.org/script/magick-wand.php), the C interface for ImageMagick processing libraries
    • stumpy_gif - Write (animated) GIF images
    • stumpy_png - Read and write PNG images

  • Logging and monitoring

    • crometheus - A [Prometheus](https://prometheus.io/) client library
    • crystal-logreader - Tailing log file
    • instana - A metrics and distributed trace collector for [Instana](https://www.instana.com/)
    • katip - JSONbase logger
    • statsd.cr - [Statsd](https://github.com/etsy/statsd) client library
    • syslog.cr - Implementation of Syslog client
    • fluent-logger-crystal - A structured logger for [Fluentd](https://www.fluentd.org/)

  • Machine Learning

    • ai4cr - Artificial Intelligence (based on https://github.com/SergioFierens/ai4r)
    • crystal-fann - FANN (Fast Artifical Neural Network) binding
    • crystal-learn - Sklearn-like machine-learning library
    • grey_matter - A basic artificial neural network library
    • shainet - SHAInet (Neural Network in pure crystal)
    • tensorflow.cr - Bindings for [TensorFlow](https://github.com/tensorflow/tensorflow)

  • Markdown/Text Processors

    • markd - Yet another markdown parser built for speed, Compliant to CommonMark specification
    • remarkdown - GFM for Crystal
    • html-pipeline - HTML processing filters and utilities

  • Misc

    • aasm.cr - Easy to use finite state machine for Crystal classes
    • accord - Sharable validations for Crystal objects
    • any_hash.cr - Recursive Hash with better JSON::Any included
    • atomic_write.cr - Library for writing or apppending files atomically
    • circuit_breaker - Implementation of the circuit breaker pattern
    • crystal-binary_parser - Binary parser
    • crz - Functional programming library
    • denetmen - Useful micro validator / check library
    • emoji.cr - Emoji library
    • html_builder - DSL for creating HTML
    • i18n.cr - Internationalization shard
    • immutable - Implementation of thread-safe, persistent, immutable collections
    • inflector.cr - Singularize, pluralize, camelize, etc (port from ActiveSupport)
    • m3u8 - Generate and parse m3u8 playlists for HTTP Live Streaming
    • manual-generator - Tool to generate PDF manuals from documentation sites
    • raytracer - CPU Raytracer with examples
    • syscall.cr - Raw syscall interface
    • tren - Give your SQL some love
    • ulid - Universally Unique Lexicographically Sortable Identifier (ULID)
    • wikicr - Wiki using git to manage revisions
    • burocracia.cr - burocracia.cr the dependecyless shard to validate, generate and format Brazilian burocracias such as CPF, CNPJ and CEP
    • lirith - Graphics engine
    • hoop - Building native OSX apps

  • Network Protocols

    • bson.cr - Native BSON implementation
    • Crirc - IRC protocol implementation (Client, Server, Bots)
    • crystal-json-socket - JSON-socket client & server implementation. Inspired by and compatible with [node-json-socket](https://github.com/sebastianseilund/node-json-socket/) and [ruby-json-socket](https://github.com/foi/ruby-json-socket)
    • fast_irc.cr - Fast IRC parser/generator
    • jwt - Implementation of JWT (JSON Web Token)
    • msgpack-crystal - MessagePack library
    • transfer_more - Clone of transfer.sh to uploads files
    • OAuth - OAuth consumer (Crystal stdlib)
    • OAuth2 - OAuth2 client (Crystal stdlib)
    • OpenSSL - bindings to libssl (Crystal stdlib)
    • OAuth - OAuth consumer (Crystal stdlib)
    • OAuth2 - OAuth2 client (Crystal stdlib)
    • OpenSSL - bindings to libssl (Crystal stdlib)
    • OAuth - OAuth consumer (Crystal stdlib)
    • OAuth2 - OAuth2 client (Crystal stdlib)
    • OpenSSL - bindings to libssl (Crystal stdlib)
    • OAuth - OAuth consumer (Crystal stdlib)
    • OAuth2 - OAuth2 client (Crystal stdlib)
    • OpenSSL - bindings to libssl (Crystal stdlib)

  • Networking

  • ORM/ODM Extensions

    • active_record.cr - Active Record pattern implementation
    • clear - ORM specialized to PostgreSQL only but with advanced features
    • crecto - Database wrapper, based on Ecto
    • granite - ORM for Postgres, Mysql, Sqlite
    • jennifer.cr - Active Record pattern implementation with flexible query chainable builder and migration system
    • ohm-crystal - Object-hash mapping library for Redis
    • record - Type safe querying, saving and updating
    • redis-tsv.cr - Import and export data from Redis in TSV format
    • stal-crystal - Set algebra solver for Redis
    • topaz - A simple and useful db wrapper

  • Package Management

    • CRelease - Version and git tag manager that makes shard releases easy
    • shards - Dependency manager for the Crystal

  • Processes and Threads

    • await_async - Add keywords await & async in Crystal Lang
    • crystal-futures - Future type implementation
    • neph - A modern command line job processor that can execute jobs concurrently
    • promise - A Promise Implementation

  • Project Generators

    • bindgencr - Generator of bindings based on castxml output
    • crystal_lib - Automatic binding generator for native libraries
    • fez - A Kemal application generator
    • kgen - Kemalyst command line tool for console, init, generate (scaffolding), and watch.
    • libgen - Automatic bindings generator configured using JSON/YAML files
    • wasp - Static Site Generator

  • Queues and Messaging

    • amqp.cr - AMQP 0.9.1 client with RabbitMQ extensions
    • dispatch - In memory asynchronous job processing
    • mosquito - Redis backed periodic and ad hoc job processing
    • sidekiq.cr - Simple, efficient job processing

  • Routing

    • crouter - A standalone router
    • orion - A minimal, rails-esque routing library
    • router.cr - Minimum but powerful http router for HTTP::Server
    • toro - Tree Oriented Routing

  • Scheduling

  • Science and Data analysis

    • linalg - Linear algebra library inspired by MATLAB and SciPy.linalg
    • predict.cr - Satellite prediction library using the sgp4 model
    • scorystal - Scoring API for PMML - supports RF and GBM
    • stats - An expressive implementation of statistical distributions
    • hermes - Data Mapper pattern implementation for ElastiSearch
    • query-builder - Sql Query Builder library
    • query.cr - Query abstraction
    • soegen - Elasticsearch client for Crystal similar to the stretcher gem for ruby

  • Serverless Computing

    • gcf.cr - Managed execution of Crystal in Google Cloud Functions

  • System

    • baked_file_system - Virtual file system implementation
    • hardware - Get CPU, Memory and Network informations of the running OS and its processes
    • rcpu - A virtual machine emulator and assembler

  • Task management

    • cake - Production-ready Make-like utility tool
    • sam - Another one Rake-like task manager with namespacing and arguments system

  • Template Engine

    • crikey - Templating engine inspired by [Hiccup](https://github.com/weavejester/hiccup)
    • crinja - An implementation of the [Jinja2 template engine](http://jinja.pocoo.org/)
    • crustache - [{{Mustache}}](https://mustache.github.io) for Crystal
    • Kilt - Abstraction layer for template engines
    • Slang - Lightweight, terse, templating language inspired by Ruby's Slim
    • teeplate - A library for rendering multiple template files
    • temel - Extensible HTML::Builder alternative for Crystal, supports custom tag definitions
    • ECR (Embedded Crystal) - compile time template language which uses plain crystal expressions (Crystal stdlib)
    • ECR (Embedded Crystal) - compile time template language which uses plain crystal expressions (Crystal stdlib)
    • ECR (Embedded Crystal) - compile time template language which uses plain crystal expressions (Crystal stdlib)
    • ECR (Embedded Crystal) - compile time template language which uses plain crystal expressions (Crystal stdlib)

  • Testing

    • coverage
    • crotest - A tiny and simple test framework
    • LuckyFlow - Automated browser tests similar to Capybara
    • mass-spec - Web API testing library
    • microtest - Small opinionated testing library focusing on power asserts
    • minitest.cr - Library for unit tests and assertions
    • mocks.cr - Mocking library for Crystal
    • spec2-mocks - An adapter of mocks.cr for spec2.cr
    • spec2.cr - Enhanced testing library
    • timecop.cr - Library for mocking with `Time.now`. Inspired by [timecop ruby gem](https://github.com/travisjeffery/timecop)
    • webmock.cr - Library for stubbing `HTTP::Client` requests
    • Spec - spec framework (Crystal stdlib)
    • Spec - spec framework (Crystal stdlib)
    • Spec - spec framework (Crystal stdlib)
    • Spec - spec framework (Crystal stdlib)

  • Web Frameworks

    • amber - Open source efficient and cohesive web application framework
    • kemal - Lightning Fast, Super Simple web framework. Inspired by Sinatra
    • lattice-core - A WebSocket-first object-oriented framework (based on Kemal)
    • lucky - Catch bugs early, forget about most performance issues, and spend more time on code instead of debugging and writing tests
    • prism - Light, modular web framework
    • raze - Modular, light web framework
    • spider-gazelle - A Rails esque web framework with a focus on speed and extensibility
Programming Languages
Crystal 309 JavaScript 3 HTML 3 C 2 Go 1 C++ 1 CSS 1 Ruby 1
Categories
Data Formats 30 Third-party APIs 27 HTTP 26 Examples and funny stuff 25 Web Servers 24 Misc 23 Network Protocols 19 C bindings 18 Algorithms and Data structures 17 Framework Components 17 Testing 15 Database Drivers/Clients 13 Implementations/Compilers 12 Cli Builders 12 Template Engine 11 ORM/ODM Extensions 10 Official Documentation Translations 9 Converters 9 Cli Utils 8 Game Development 7 Logging and monitoring 7 Web Frameworks 7 Development Tools 6 Machine Learning 6 Project Generators 6 Email 5 Caching 5 HTML/XML Parsing 5 GUI library 4 Routing 4 Scheduling 4 Science and Data analysis 4 Processes and Threads 4 Queues and Messaging 4 Database Tools 4 Search 4 Environment Management 3 System 3 Configuration 3 Markdown/Text Processors 3 Image processing 3 Task management 2 Package Management 2 Unofficial 2 Data Generators 2 Feature Flipping 1 Api Builders 1 Networking 1 Blockchain 1 Code Analysis and Metrics 1 Serverless Computing 1
Sub Categories
Keywords
crystal 176 kemal 15 crystal-language 11 database 10 api 8 mysql 7 crystal-lang 6 shards 6 web 5 testing 5 redis 5 orm 5 bindings 5 cli 5 json 4 fast 4 middleware 4 sql 3 router 3 shard 3 monitor 3 framework 3 concurrency 3 gui 3 game 3 sfml 3 command-line 3 markdown 3 machine-learning 3 configuration 3 postgres 3 wrapper 3 web-framework 3 parser 3 data-structures 3 http 3 telegram 3 irc 2 monitoring 2 wkhtmltopdf 2 spec 2 x11 2 postgresql 2 command-line-tool 2 linux 2 react 2 html 2 efficient 2 ruby 2 hash 2