Skip to content
/ awesome-crystal Public

💎 A collection of awesome Crystal libraries, tools, frameworks and software

awesomelists.top/#/veelenga/awesome-crystal

License

MIT license
3.4k stars 313 forks Branches Tags Activity
Star
Notifications You must be signed in to change notification settings

veelenga/awesome-crystal

BranchesTags

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

794 Commits
.github
.github
 
 
logo
logo
 
 
spec
spec
 
 
util
util
 
 
.gitignore
.gitignore
 
 
CODE_OF_CONDUCT.md
CODE_OF_CONDUCT.md
 
 
LICENSE
LICENSE
 
 
README.md
README.md
 
 
shard.lock
shard.lock
 
 
shard.yml
shard.yml
 
 

Repository files navigation

SWUbanner

awesome-crystal

Awesome Crystal

Awesome

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.

Algorithms and Data structures

  • bisect - Inserting values into a sorted array
  • blurhash.cr - BlurHash implementation
  • crie - Compile-time Trie
  • CrOTP - HOTP and TOTP implementation for two factor authentication
  • 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
  • csuuid - A Chronologically Sortable UUID
  • edits.cr - Collection of edit distance algorithms
  • fzy - A Crystal port of awesome Fzy project fuzzy finder algorithm
  • Goban - A fast and efficient QR Code implementation
  • graphlb - Collection of graph datastructure and algorithms
  • haversine - An Implementation of the Haversine formula
  • kd_tree - An implementation of "K-Dimensional Tree" and "N-Nearest Neighbors"
  • ksuid.cr - K-Sortable Globally Unique IDs
  • markov - Build Markov Chains and run Markov Processes
  • multiset.cr - Implementation of a multiset
  • qr-code - QR Code generator
  • radix - Radix Tree implementation
  • s2_cells - S2 Geometry for spatial indexing
  • secure-remote-password - SRP-6a protocol for authentication over an insecure network
  • splay_tree_map - Splay Tree implementation that conforms to the Hash ducktype

Blockchain

  • Axentro - A custom blockchain platform
  • Cocol - A minimal blockchain testbed
  • secp256k1.cr - Elliptic curve used in the public-private-key cryptography

C bindings

Caching

CLI Builders

  • admiral - A robust DSL for writing command line interfaces
  • Athena Console - Allows for the creation of CLI based commands
  • clicr - A simple declarative command line interface builder
  • clim - Slim command line interface builder
  • commander - Command-line interface builder
  • Keimeno - A lightweight text user interface library in Crystal
  • OptionParser - command-line options processing (Crystal stdlib)
  • Phreak - A highly flexible Crystal CLI builder in the style of OptionParser

CLI Utils

  • climate - Tiny tool to make your CLI output 🌈 coloured
  • coin - Command-line application that performs currency conversion via the Fixer API
  • cride - A light CLI text editor/IDE
  • lff - Simple and straightforward large files finder utility in command line
  • meet - Start a jitsi meeting quickly from the comfort of your command line
  • oq - A performant, and portable jq wrapper to facilitate the consumption and output of formats other than JSON; using jq filters to transform the data
  • progress_bar.cr - A simple and customizable progress bar
  • tablo - A flexible terminal table generator
  • tallboy - Generate ASCII character tables with support for spanning cells over multiple columns

Code Analysis and Metrics

  • ameba - A static code analysis tool
  • linguist.cr - Using multiple ways to find programming language used in files, based on Github's Linguist

Compression

  • Crystar - Readers and writers of Tar archive format
  • Gzip - readers and writers of gzip format (Crystal stdlib)
  • polylines.cr — compression of series of coordinates
  • snappy - Snappy compression format reader/writer for Crystal
  • Zip - readers and writers of zip format (Crystal stdlib)
  • Zlib - readers and writers of zlib format (Crystal stdlib)
  • zstd.cr - Bindings for Zstandard compression library

Configuration

  • cr-dotenv - Loads .env file
  • Envy - Load environment variables from YAML
  • envyable - A simple YAML to ENV config loader
  • 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
  • crunits - Tool for converting units of measure (miles to kilometers, celsius to fahrenheit etc)
  • money - Handling money and currency conversion with ease (almost complete port of RubyMoney)
  • sass.cr - Compile SASS/SCSS to CSS (libsass binding)

Cryptography

  • cmac - Crystal implementation of Cipher-based Message Authentication Code (CMAC)
  • ed25519 - the Ed25519 elliptic curve public-key signature system described in [RFC 8032]
  • monocypher.cr - Crystal wrapper for the Monocypher crypto library
  • sodium.cr - Crystal wrapper for the libsodium crypto API

Data Formats

  • BinData - Binary data parser helper with an ASN.1 parser
  • config.cr - Easy to use configuration format parser
  • crinder - Class based json renderer
  • Crystalizer - (De)serialize any Crystal object; supporting JSON, YAML, and Byte formats out of the box
  • CSV - parsing and generating for comma-separated values (Crystal stdlib)
  • front_matter.cr - Separates a files front matter from its content
  • geoip2.cr - GeoIP2 reader
  • HAR - HAR (HTTP Archive) parser
  • INI - INI file parser (Crystal stdlib)
  • JSON - parsing and generating JSON documents (Crystal stdlib)
  • json-schema - convert JSON serializable classes into a JSON Schema representation
  • JSON::OnSteroids - handle and mutate JSON document easily
  • maxminddb.cr - MaxMindDB reader
  • toml.cr - TOML parser
  • XML - parsing and generating XML documents (Crystal stdlib)
  • YAML - parsing and generating YAML documents (Crystal stdlib)

Data Generators

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

Database Drivers/Clients

Database Tools

  • migrate - A simpler database migration tool with transactions
  • queryit - A setupless terminal based SQL query runner

Debugging

  • backtracer.cr - Shard aiming to assist with parsing backtraces into a structured form
  • debug.cr - debug!(…) macro for pp-style debugging

Dependency Injection

  • Athena Dependency Injection - Robust dependency injection service container framework
  • Crystal-DI - Lightweight DI Container
  • HardWire - A compile-time non-intrusive dependency injection system
  • syringe - A simple and basic dependency injection shard for crystal

Email

Environment Management

Examples and funny stuff

Framework Components

  • Athena Event Dispatcher - A Mediator and Observer pattern event library
  • Athena Negotiation - Framework agnostic content negotiation library
  • device_detector - Shard for detect device by user agent string
  • Exception Page - An exceptional exception page for Crystal web libraries and frameworks
  • graphql - Type-safe GraphQL server implementation
  • graphql-crystal - GraphQL implementation
  • kemal-session - Session handler for Kemal
  • mochi - Authentication shard inspired by Devise supporting: Authenticable, Confirmable, Invitable & more
  • motion.cr - Object oriented frontend library for Amber
  • multi-auth - Standardized multi-provider OAuth2 authentication (inspired by omniauth)
  • praetorian - Minimalist authorization library inspired by Pundit
  • Shield - Comprehensive security for Lucky framework
  • shrine.cr - File Attachment toolkit for Crystal applications. Heavily inspired by Shrine for Ruby
  • tourmaline - Telegram bot framework with an API loosely based on telegraf.js

Game Development

GUI Development

HTML Builders

  • form_builder.cr - Dead simple HTML form builder for Crystal with built-in support for many popular UI libraries such as Bootstrap

HTML/XML Parsing

HTTP

Image processing

Implementations/Compilers

  • charly - Charly Programming Language
  • cltk - A crystal port of the Ruby Language Toolkit
  • crisp - Lisp dialect implemented with Crystal
  • 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
  • runic-lang - In-design toy language

Internationalization

  • crystal-i18n - An internationalization library inspired by Ruby-I18n
  • i18n.cr - Internationalization shard
  • Lens - A multiformat internationalization (i18n) shard for Crystal. Supports Gettext, Ruby YAML, etc.
  • Rosetta - A blazing fast internationalization (i18n) library with compile-time key lookup supporting YAML and JSON formats

Logging and monitoring

Machine Learning

Markdown/Text Processors

  • markd - Yet another markdown parser built for speed, Compliant to CommonMark specification

Misc

  • aasm.cr - Easy to use finite state machine for Crystal classes
  • any_hash.cr - Recursive Hash with better JSON::Any included
  • anyolite - Full mruby interpreter with simple bindings, allowing for easy scripting support in projects
  • burocracia.cr - burocracia.cr the dependecyless shard to validate, generate and format Brazilian burocracias such as CPF, CNPJ and CEP
  • callbacks - Expressive callbacks module
  • circuit_breaker - Implementation of the circuit breaker pattern
  • CrSignals - Signals/slots notification library
  • crystal-binary_parser - Binary parser
  • crystal-web-framework-stars - Web frameworks for Crystal, most starred on Github
  • crz - Functional programming library
  • defined - macros for conditional compilation based on constant definitions, version requirements, or environment variable settings
  • emoji.cr - Emoji library
  • gphoto2-web.cr - Web API for libgphoto2
  • immutable - Implementation of thread-safe, persistent, immutable collections
  • iterm2 - Display images within the terminal using the ITerm2 Inline Images Protocol
  • monads - Monad implementation
  • pinger - Ping IP addresses and DNS entries without requiring sudo
  • port_midi - Crystal C bindings for the PortMIDI cross-platform MIDI I/O library
  • retriable.cr - Simple DSL to retry failed code blocks
  • serf-handler.cr - Framework for building Serf handlers, with a suite of useful builtin capabilities
  • simple_retry - Simple tool for retrying failed code blocks
  • sslscan.cr - Crystal shard wrapping the rbsec/sslscan utility
  • version_tools - Version-dependent behaviour, specified at compile-time
  • wafalyzer - Web Application Firewall (WAF) Detector - shard + cli
  • zaru_crystal - Filename sanitization

Network Protocols

Networking

ORM/ODM Extensions

  • avram - A database wrapper for reading, writing, and migrating Postgres databases
  • 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
  • rethinkdb-orm - ORM for RethinkDB / RebirthDB

Package Management

  • shards - Dependency manager for the Crystal

Processes and Threads

  • await_async - Add keywords await & async in Crystal Lang
  • concurrent.cr - Simplified concurrency using streams/pipelines, waitgroups, semaphores, smores and more
  • neph - A modern command line job processor that can execute jobs concurrently
  • promise - A Promise implementation with type inference
  • werk - Dead simple task runner with concurrent support, ideal for local CI

Project Generators

  • crystal_lib - Automatic binding generator for native libraries
  • fez - A Kemal application generator
  • libgen - Automatic bindings generator configured using JSON/YAML files

Queues and Messaging

  • mosquito - Redis backed periodic and ad hoc job processing
  • NATS.io - NATS client
  • sidekiq.cr - Simple, efficient job processing

Routing

  • orion - A minimal, rails-esque routing library
  • router.cr - Minimum but powerful http router for HTTP::Server

Scheduling

  • crystime - Advanced time, calendar, schedule, and remind library
  • schedule.cr - Run periodic tasks
  • tasker - A high precision scheduler including timezone aware cron jobs

Science and Data analysis

  • alea - Repeatable sampling, CDF and other utilities to work with probability distributions
  • ishi - Graph plotting package with a small API and sensible defaults powered by gnuplot
  • linalg - Linear algebra library inspired by MATLAB and SciPy.linalg
  • num.cr - Numerical computing library supporting N-Dimensional data
  • predict.cr - Satellite prediction library using the sgp4 model
  • quartz - Modeling and simulation framework

Search

  • hermes - Data Mapper pattern implementation for ElastiSearch
  • soegen - Elasticsearch client for Crystal similar to the stretcher gem for ruby

Serverless Computing

  • crystal_openfaas - Template to enable crystal as first class citizens in OpenFaaS
  • FaaStRuby - Serverless Software Development Platform for Ruby and Crystal
  • secrets-env - Extends ENV module to read values injected by docker / kubernetes secrets and other orchestration tools

System

  • baked_file_system - Virtual file system implementation
  • hardware - Get CPU, Memory and Network informations of the running OS and its processes

Task management

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

Template Engine

  • 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)
  • Jbuilder - Generate JSON objects with a Builder-style DSL, inspired by jbuilder
  • Kilt - Abstraction layer for template engines
  • Slang - Lightweight, terse, templating language inspired by Ruby's Slim
  • teeplate - A library for rendering multiple template files
  • Water - A library for writing HTML in plain Crystal

Testing

  • Athena Spec - Common/helpful Spec compliant testing utilities
  • crotest - A tiny and simple test framework
  • crytic - Mutation testing 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)
  • spectator - Feature rich spec framework that uses the modern expect syntax
  • timecop.cr - Library for mocking with Time.now. Inspired by the timecop ruby gem
  • vcr - A HTTP capture and replay implementation for crystal
  • webdriver_pump - Page Object library. Inspired by Ruby's WatirPump
  • webmock.cr - Library for stubbing HTTP::Client requests

Third-party APIs

Validation

Web Frameworks

  • amber - Open source efficient and cohesive web application framework
  • Athena - A web framework comprised of reusable, independent components
  • grip - The microframework for writing powerful web applications
  • kemal - Lightning Fast, Super Simple web framework. Inspired by Sinatra
  • lucky - Catch bugs early, forget about most performance issues, and spend more time on code instead of debugging and writing tests
  • marten - A web framework that makes building web applications easy, productive, and fun
  • runcobo - An api framework with simple, intuitive and consistent DSL, using jbuilder to render json
  • Shivneri - Component based MVC web framework for crystal targeting good code structures, modularity & performance
  • spider-gazelle - A Rails esque web framework with a focus on speed and extensibility

Community

Unofficial

Resources

Official Documentation Translations

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
  • icr - Interactive console for Crystal (like IRB for Ruby)
  • Invidious - Invidious is an alternative front-end to YouTube
  • mpngin - A URL shortener with simple stats
  • quicktype - Generate models and serializers from JSON, JSON Schema, GraphQL, and TypeScript
  • shards.info - Web service that lists all repositories on GitHub that have Crystal code in them. The sources are available on GitHub

Tools

DevOps

  • ansible-crystal - Ansible playbook for installing crystal
  • DPPM - An easy, universal way to install and manage applications as packages (mostly Linux)

Editor Plugins

LSP Language Server Protocol Implementations

  • crystalline - Crystalline is an implementation of the Language Server Protocol written in and for the Crystal Language
  • scry - Code analysis server for Crystal implementing the Language Server Protocol

Shell plugins

  • crun - Crystal Run : shebang wrapper for Crystal
  • crystal-zsh - .oh-my-zsh plugin

About

💎 A collection of awesome Crystal libraries, tools, frameworks and software

awesomelists.top/#/veelenga/awesome-crystal

Topics

list crystal awesome awesome-list shards

Resources

Readme

License

MIT license

Code of conduct

Code of conduct
Activity

Stars

3.4k stars

Watchers

117 watching

Forks

313 forks
Report repository

Releases

No releases published

Packages

No packages published

Contributors 254
+ 240 contributors

Languages