Awesome Crystal

A curated list of awesome Crystal code and resources. Inspired by awesome and awesome-awesomeness. The goal is to have projects mostly stable and useful for the community.

Search Crystal Shards or follow announcements Crystal [ANN] for more.

Contributions are welcome. Please take a quick look at the contribution guidelines first.

• Awesome Crystal
  • Algorithms and Data structures
  • Api Builders
  • Blockchain
  • C Bindings
  • Caching
  • Cli Builders
  • Cli Utils
  • Code Analysis and Metrics
  • Configuration
  • Converters
  • Data Formats
  • Data Generators
  • Database Drivers/Clients
  • Database Tools
  • Development Tools
  • Email
  • Environment Management
  • Examples and funny stuff
  • Feature Flipping
  • Framework Components
  • Game Development
  • GUI library
  • HTML/XML parsing
  • HTTP
  • Image Processing
  • Implementations/Compilers
  • Logging and monitoring
  • Machine Learning
  • Markdown/Text Processors
  • Misc
  • Network Protocols
  • Networking
  • ORM/ODM Extensions
  • Package Management
  • Processes and Threads
  • Project Generators
  • Queues and Messaging
  • Routing
  • Scheduling
  • Science and Data analysis
  • Search
  • System
  • Task management
  • Template Engine
  • Testing
  • Third-party APIs
  • Web Frameworks
  • Web Servers
• Community
  • Unofficial
• Resources
  • Official Documentation Translations
• Services and Apps
• Tools
  • DevOps
  • Editor Plugins
  • Shell Plugins

Algorithms and Data structures

• aho_corasick - AhoCorasick algorithm
• crystal-diff - A Crystal sequence differencing implementation
• crystal-linked-list - Implementation of Linked List
• crystaledge - A pure Vector Math library
• crystalg - A Generic Algorithm 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
• hash_ring - An Implementation of Consistent Hash Ring
• markov - Build Markov Chains and run Markov Processes
• miller_rabin - Implements Miller-Rabin 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

Api Builders

• kemal-rest-api - A library to create RESTful API with Kemal

Blockchain

• SushiChain - A custom blockchain platform

C bindings

• asound-cr - Bindings for ALSA/libasound
• cairo-cr - Bindings for Cairo graphics library
• clang.cr - Libclang bindings
• crass - Bindings for libsass
• crt.cr - Bindings for libncursesw and crt
• crystal-gsl - GNU Scientific Library bindings
• curl-crystal - Bindings for libcurl
• duktape.cr - Bindings for the Duktape javascript engine
• gphoto2.cr - Bindings for the libgphoto2 library
• icu.cr - Bindings for the ICU 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 library
• ssh2.cr - Bindings for libssh2 library
• termbox-crystal - Bindings and extension library for termbox (terminal UI library)
• x11-cr - X11 bindings
• x_do.cr - Bindings for libxdo (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)

Cli Utils

• 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

• ameba - A static code analysis tool
• trashman - A simple memory profiler for Crystal applications

Configuration

• cr-dotenv - Loads .env file
• habitat - Type safe configuration for your classes and modules

Converters

• 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)
• moola - Library for dealing with money and conversion (inspired by RubyMoney)
• ms - Library to easily convert various time formats to milliseconds and milliseconds to human readable format
• sass.cr - Compile SASS/SCSS to CSS (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 Formats

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

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

• arangocr - ArangoDB client
• crystal-db - Common db api
• crystal-monetdb-libmapi - Bindings for MonetDB
• crystal-mysql - MySQL connector for Crystal
• crystal-pg - A Postgres driver
• crystal-redis - Full featured Redis client
• crystal-sqlite3 - SQLite3 bindings
• eventql-crystal - EventQL driver
• leveldb - Crystal bindings for LevelDB
• mongo.cr - Binding for MongoDB C driver
• rethinkdb.cr - RethinkDB Driver
• rocksdb.cr - RocksDB client
• tarantool-crystal - Tarantool driver

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

• asdf-crystal - Plugin for asdf version manager
• crenv - Crystal version manager
• rcm.cr - Redis Cluster Manager

Examples and funny stuff

• battlesnake_crystal - Tron snake for battlesnake competition
• breakout.cr - Breakout game written using crsfml
• chuck-norris-holy-quotes - Chuck Norris holy quotes
• clamp - Clamp any Comparable
• crsfml-examples - Simple games made with CrSFML
• crystal-benchmarks-game - The Computer Language Benchmarks Game
• crystal-by-example - Crystal By Example
• Crystal-Maze - A* Path finding for PNG mazes
• crystal-mysql-crud-example - Crystal MySQL CRUD example
• crystal-patterns - Examples of GOF patters
• crystalized_ruby - Native Ruby extensions written in Crystal
• exercism-crystal - Exercism exercises
• jihantoro-cr-mysql - Crystal MySQL from scratch sample app
• jihantoro.sd - Crystal & Kemal version of Serdar Dogruyol blog
• kemal-chat - Build realtime applications with Kemal and WebSocket
• kemal-heroku-example - This repository shows, how you can publish your open source apps which powered kemal framework publish as heroku app in seconds
• kemal-mysql-blog - Blog written with Crystal, Kemal and MySQL
• kemal-react-chat - Build Realtime Web applications with Kemal and React
• kemal-vue-chat - Build Realtime Web applications with Kemal and Vue.js
• lattice-core-card-game - A demo web app for (WebSocket-based) lattice-core
• medley - A mixture of music related methods
• os-crystal - x86 Kernel implemented in Crystal
• realtime-todo-app - Realtime Todo application developed with Kemal, Websockets, React, ES2015 and PostgreSQL
• rocky - React Over Crystal Kemal and Yarn
• try.cr - Try monad

Feature Flipping

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

Framework Components

• cr-melon - Class based Http APIs
• Crystal-DI - Lightweight DI Container
• crystal-mime - Mimetypes for Crystal
• device_detector - Shard for detect device by user agent string
• Exception Page - An exceptional exception page for Crystal web libraries and frameworks
• graphql-crystal - Graphql implementation
• kave - Kemal API Version Extension
• kemal-auth-token - Kemal middleware to authentication via HTTP header token using JWT
• kemal-monetdb - MonetDB Data connection for Kemal
• kemal-session - Session handler for Kemal
• mime-types.cr - A port of the Ruby MIME-types library
• multi-auth - Standardized multi-provider OAuth2 authentication (inspired by omniauth)
• phoenix.cr - Phoenix Channels client
• request_id - Middleware for generates / pick up a unique request ID for Crystal servers
• response_time - Response time for Crystal servers (pure http server, kemal, etc.)
• spec-kemal - Easy testing for Kemal
• tele-broadcast.cr - Broadcasting module for tele.cr

Game Development

• cray - Bindings for raylib, an easy-to-use game development library
• CrSFML - Bindings to SFML multimedia/game library
• crystal-chipmunk - Bindings for Chipmunk, a fast and lightweight 2D game physics library
• glove - A library for gaming development
• inari - A collection of games using Glove as the game engine
• mos_game - Mini Offline Singleplayer game

GUI library

• hedron - An extendable GUI library, with markup language capabilities
• libui.cr - Bindings for libui
• qt5.cr - Qt5 bindings for Crystal, based on Bindgen

HTML/XML Parsing

• crystagiri - An Html Reader / parser like Nokogiri Ruby gem
• gumbo-crystal - Bindings for Gumbo, 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

• cossack - Simple flexible HTTP client
• crest - Simple HTTP and REST client, inspired by the Ruby's RestClient gem
• crul - Command line HTTP client
• cryload - HTTP benchmarking tool
• halite - Crystal HTTP Requests with a chainable REST API, built-in sessions and loggers
• helmet - Set security-related HTTP headers
• http-multiserver.cr - Mounting multiple servers via routes (a.k.a. URL mapping)
• http-protection - Protection against typical web attacks
• http2 - HTTP/2 Protocol Implementation
• HTTP::Client - HTTP client (Crystal stdlib)
• HTTP::Server - HTTP server (Crystal stdlib)
• HTTP::WebSocket - HTTP WebSocket client (Crystal stdlib)
• http_distributor - HTTP server which allows sneaky http requests
• http_parser.cr - Wrapper for Http Parser lib
• keyer_cr - Adds HTTP GET/POST parameter parsing as a Hash-like object
• ngrok.cr - Ngrok wrapper
• resp-crystal - Lightweight RESP client

Image processing

• magickwand-crystal - Bindings for MagickWand, the C interface for ImageMagick processing libraries
• stumpy_gif - Write (animated) GIF images
• stumpy_png - Read and write PNG images

Implementations/Compilers

• charly - Charly Programming 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
• LinCAS-lang - A programming language for scientific computation
• mint-lang - A refreshing programming language for the front-end web
• myst-lang - A practical, dynamic language designed to be written and understood as easily and efficiently as possible
• NuummiteOS - An OS written in Crystal as a Proof of Concept
• runic-lang - In-design toy language
• zir - Realizes to write macros in any scripts into any languages

Logging and monitoring

• crometheus - A Prometheus client library
• crystal-logreader - Tailing log file
• fluent-logger-crystal - A structured logger for Fluentd
• instana - A metrics and distributed trace collector for Instana
• katip - JSONbase logger
• Logger - logging utility (Crystal stdlib)
• statsd.cr - Statsd client library
• syslog.cr - Implementation of Syslog client

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

Markdown/Text Processors

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

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
• burocracia.cr - burocracia.cr the dependecyless shard to validate, generate and format Brazilian burocracias such as CPF, CNPJ and CEP
• circuit_breaker - Implementation of the circuit breaker pattern
• crystal-binary_parser - Binary parser
• crystal-futures - Future type implementation
• crz - Functional programming library
• denetmen - Useful micro validator / check library
• emoji.cr - Emoji library
• hoop - Building native OSX apps
• 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)
• lirith - Graphics engine
• 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

Network Protocols

• amqp.cr - AMQP 0.9.1 client with RabbitMQ extensions
• bson.cr - Native BSON implementation
• Crirc - IRC protocol implementation (Client, Server, Bots)
• fast_irc.cr - Fast IRC parser/generator
• jwt - Implementation of JWT (JSON Web Token)
• msgpack-crystal - MessagePack library
• OAuth - OAuth consumer (Crystal stdlib)
• OAuth2 - OAuth2 client (Crystal stdlib)
• OpenSSL - bindings to libssl (Crystal stdlib)
• transfer_more - Clone of transfer.sh to uploads files

Networking

• ipaddress.cr - Library to handle IPv4 and IPv6 addresses

ORM/ODM Extensions

• active_record.cr - Active Record pattern implementation
• clear - ORM specialized to PostgreSQL only but with advanced features
• core - Pure, transparent and efficient ORM
• 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

• 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

• 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

• cron_scheduler - Job scheduler with crontab patterns
• crystime - Advanced time, calendar, schedule, and remind library
• quartz - Crystal clear timers
• schedule.cr - Run periodic tasks

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

Search

• 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

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
• crinja - An implementation of the Jinja2 template engine
• crustache - {{Mustache}} for Crystal
• ECR (Embedded Crystal) - compile time template language which uses plain crystal expressions (Crystal stdlib)
• 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

Testing

• coverage – Generate cover report for your crystal code
• 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
• Spec - spec framework (Crystal stdlib)
• 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
• webmock.cr - Library for stubbing HTTP::Client requests

Third-party APIs

• 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 API
• crystal-github - Wrapper for the Github API
• crystal-monzo - A client for the Monzo API
• 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
• hncr - A Hacker News API wrapper
• mixpanel-crystal - A library for sending events to Mixpanel
• nexmo-crystal - Nexmo REST API client
• ocean_kit - Digital Ocean v2 API client
• open_exchange_rates - A library to access Open Exchange Rates API
• pinboard.cr - Pinboard API
• raven.cr - Raven is a client for Sentry
• slack.cr - A Slack Real Time Messaging API 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
• tourmaline - Yet another Telegram Bot API wrapper
• twitter-crystal - A library to access the Twitter API

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

Web Servers

• 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

Community

• Crystal weekly newsletters
• Gitter
• Google Group
• IRC - #crystal-lang on Freenode
• Metaruby - Crystal Forum on Metaruby
• Reddit
• Stackoverflow

Unofficial

• Russian-speaking Telegram Group - Добро пожаловать, товарищ!

Resources

• Crystal for Rubyists - free book to bootstrap your Crystal journey
• crystal-lang.org - Official language site
• devdocs.io - API Documentation Browser with Crystal support

Official Documentation Translations

• br.crystal-lang.org - Brazilian
• ja.crystal-lang.org - Japanese
• kr.crystal-lang.org - Korean
• ru.crystal-lang.org - Russian
• tw.crystal-lang.org - Chinese Traditional

Services and Apps

• carc.in - A web service that runs your code and displays the result
• Crank - A Procfile-based application manager (like Foreman)
• cry - Ability to execute crystal code in a fashion similar to Ruby's pry edit
• Crystal [ANN] - Announce new project, blog post, version update or any other Crystal work
• crystalshards.herokuapp.com, crystalshards.xyz - Web services that list all available Crystal shards
• Crystular - Regular expression tester
• DeBot - IRC bot written in Crystal
• Ficha - A super secret chat app, for any body who needs privacy
• Firegrid - Click anywhere with only a few key strokes
• icr - Interactive console for Crystal (like IRB for Ruby)
• JSON to Crystal - Paste in a JSON object and get Crystal mappings in response
• mpngin - A URL shortener with simple stats
• nes - A NES emulator
• shards.rocks - Service that manages dependencies inspired by Gemnasium and David
• soundmemes.cr - Telegram Bot built on top of tele.cr
• torrent - A BitTorrent client

Tools

• crystal-base - CentOS base docker image for Crystal development
• crystal-ctags - Ctags generator for Crystal
• crystal-dash-docset - Dash docset generator
• helptransl8 - Tool for document translators

DevOps

• ansible-crystal - Ansible playbook for installing crystal
• capistrano-kemal - Capistrano Plugin for Kemal
• crystal-cookbook - Chef cookbook for installing crystal

Editor Plugins

• Atom
  • crystal-tools - Enables built in tools in Crystal compiler
  • language-crystal-actual - Crystal language support in Atom
• Emacs
  • emacs-crystal-mode - Crystal language support for Emacs
  • play-crystal.el - play.crystal-lang.org integration in Emacs
• scry - Code analysis server for Crystal implementing the Language Server Protocol
• Spacemacs
  • crystal-spacemacs-layer - Spacemacs contribution layer for Crystal
• Sublime
  • sublime-crystal - Crystal syntax highlighting for sublime Text
• TextMate
  • Crystal.tmbundle - Crystal syntax highlighting, compile, format command, snippets
• Vim
  • carcin.vim - Vim plugin to provide utility functions for carc.in
  • vim-crystal - Vim filetype support for Crystal
  • vim-slang - Vim filetype support for Slang Templating Engine
• Visual Studio Code
  • vscode-crystal - Crystal language support in VSCode
  • vscode-crystal-ide - Crystal IDE powered by Language Server Protocol
  • vscode-crystal-lang - Formatter, linter and syntax highlighting for cr and ecr files

Shell plugins

• crystal-zsh - .oh-my-zsh plugin