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1. Awesome Ruby

A curated list of awesome Ruby – Ruby frameworks, Ruby libraries and Ruby resources. Inspired by awesome-php (https://github.com/ziadoz/awesome-php) & awesome-python (https://github.com/vinta/awesome-python).

Your Pull requests are welcome! Let's make this the awesomest resource for Ruby :purple_heart:

• Programming paradigms
  • Object-oriented programming
  • Imperative programming
  • Declarative programming
  • Procedural programming
  • Functional programming
  • Reactive programming
  • Generic programming - Generics

• Operators
• Strings
• Conditional statements
• Data structures
• Keywords
• Functions
• Libraries
• Classes

• The activation stack
• Computer Architecture
• Arrays
• The Assignment Statement
• Branching
• Colors RGB
• Commenting your Code
• Composition of Functions
• Conditionals
• How Data Flows in a Program
• Data Types
• Debugging Programs
• Default Variable Values
• The Software Development Cycle
• Emacs
• Equality Test
• Expressions
• For Loops
• Functions
• Geometric Vectors
• Html
• Information Representation and Transformations
• Integer vs. Floating Point Math
• Interfaces
• Loops
• Math Operators
• Matrix info
• Memory Layout
• Numbering Systems
• Object Oriented Programming
• Packages
• Pair Programming
• Pointers and References
• Problem Solving
• Program Flow
• Programming Style
• Random Numbers
• Recursion
• Semicolons
• Shortcut Evaluation
• Strings (Data Type)
• Structures (Data Type)
• Truth Tables and Logic
• Unsigned Integers
• Variables and Data
• Variables
• While Loops

Ruby topics - programming topics

• Architecture - Software architecture
• Design
• Functional programming
• Text
• Data Structures
• Algorithms
• Dates and Times
• Mathematics
• The File System
• Data Persistence and Exchange
• Data Compression and Archiving
• Cryptography
• Concurrency with Processes, Threads, and Coroutines
• Networking
• The Internet
• Email
• Application Building Blocks
• Internationalization and Localization
• Developer Tools
• Runtime Features
• Language Tools
• Modules and Packages

• Awesome Ruby - awesome-ruby
• Ruby Admin Panels - admin-panels - admin panels
• Ruby Anti-spam - anti-spam - anti spam - antispam
• Ruby Asset Management - asset-management - asset management
• Ruby Audio - audio
• Ruby Auditing - auditing
• Ruby Authentication and OAuth - authentication-and-oauth - authentication and oauth
• Ruby Build Tools - build-tools - build tools
  • Ruby Build automation - build-automation - build automation
• Ruby Caching - caching
• Ruby Cloud Services - cloud-services - cloud services
• Ruby CMS - cms
• Ruby Code Analysis and Linter - code-analysis-and-linter - code-analysis and linter - code analysis and linter
• Ruby Command-line Tools - command-line-tools - command-line tools - command line tools
• Ruby Configuration - configuration
• Ruby CSS and Styling - css-and-styling - css and styling
• Ruby Data Validation - data-validation - data validation
• Ruby Data Visualization - data-visualization - data visualization
• Ruby Database Drivers - database-drivers - database drivers - database ORM - database ORMs
• Ruby Date and Time - date-and-time - date and time
• Ruby Debugging Tools - debugging-tools - debugging tools
  • Ruby Debugger - Debugger - Debuggers
• Ruby DevOps Tools - devops-tools - DevOps tools
• Ruby Distribution - distribution
• Ruby Documentation - documentation
• Ruby Downloader - downloader
• Ruby E-Commerce & Online Paying - e-commerce--online-paying - e-commerce and online-paying - e-commerce and online-paying
• Ruby E-Mail - e-mail
• Ruby Environment Management - environment-management - environment management
• Ruby File Uploading - file-uploading - file uploading
• Ruby Feature Flipping - feature-flipping - feature flipping
• Ruby Foreign Function Interface - foreign-function-interface - foreign function interface
• Ruby Forms - forms
• Ruby Game Development - game-development - game development
• Ruby Geolocation - geolocation
• Ruby GUI - gui
• Ruby High Performance - high-performance - high performance
• Ruby HTML/XML/CSS Manipulation - htmlxmlcss-manipulation - html manipulation - xml manipulation - css-manipulation
• Ruby HTTP - http
• Ruby Imagery - imagery
• Ruby Internationalization - internationalization
• Ruby Logging - logging
• Ruby Machine Learning - machine-learning - machine learning
• Ruby MapReduce - mapreduce
• Ruby Multi-tenancy - multi-tenancy - multitenancy - multi tenancy
• Ruby Natural Language Processing - natural-language-processing - natural language processing - NLP
• Ruby Networking - networking
• Ruby ORM - orm
• Ruby Package Management - package-management - package management
• Ruby Presentation Tools - presentation-tools - presentation tools
• Ruby Processes and Threads - processes-and-threads - processes and threads - processes and threads - Multi-threaded - Concurrency - Concurrent
• Ruby Push Notification - push-notification - push notification
• Ruby Queue - queue
• Ruby Serverless - serverless
• Ruby Spreadsheets - spreadsheets
• Ruby RESTful API - restful-api - restful API
• Ruby Science and Data Analysis - science-and-data-analysis - science and data analysis - science and data analysis
• Ruby Search - search
• Ruby Site Monitoring - site-monitoring - site monitoring
• Ruby Starter Apps - starter-apps - starter apps
• Ruby Tagging - tagging
• Ruby Template Engine - template-engine - template engine
• Ruby Testing - testing
• Ruby Text Processing - text-processing - text processing
• Ruby Third-party APIs - third-party-apis - third-party APIs - third party APIs
• Ruby URL Manipulation - url-manipulation - url manipulation
• Ruby Video - video
• Ruby Web Content Extracting - web-content-extracting - web content extracting - web content scraping - web scraping
• Ruby Web Crawling - web-crawling - web crawling
• Ruby Web Frameworks - web-frameworks - web frameworks
• Ruby Web Servers - web-servers - web servers
• Ruby WebSocket - websocket
• [Miscellaneous]] - miscellaneous
• Ruby Editor Plugins - editor-plugins - editor plugins
• [Resources]] - resources
• Ruby People to Follow - people-to-follow - people to follow
• Other Awesome Lists - other-awesome-lists - other awesome lists
• Contributing - contributing

• Libraries for administrative interfaces.*

• Ruby active_admin - https://github.com/activeadmin/activeadmin - The administration framework for Ruby on Rails applications
• Ruby rails_admin - https://github.com/sferik/rails_admin - A Rails engine that provides an easy-to-use interface for managing your data
• Ruby administrate - https://github.com/thoughtbot/administrate - A framework for creating flexible, powerful admin dashboards in Rails.

• Libraries for fighting spam.*

• Ruby RubySpamAssassin - https://github.com/noeticpenguin/RubySpamAssassin - Kills Spam Dead. Perhaps before it's sent!

• Tools for managing, compressing and minifying website assets.*

• Ruby sprockets - https://github.com/sstephenson/sprockets - Rack-based asset packaging system
• Ruby rails-assets - https://github.com/rails-assets/rails-assets/ - is the frictionless proxy between Bundler and Bower

• Ruby seal - https://github.com/zhangsu/seal - A C library (with Ruby binding) for 3D audio rendering

Ruby Auditing

Ruby Tools for logging changes to ActiveRecord models

• Ruby Audited - https://github.com/collectiveidea/audited - Audited (formerly acts_as_audited) is an ORM extension that logs all changes to your Rails models.
• Ruby Logidze - https://github.com/palkan/logidze - - Logs model changes via database triggers (PL/SQL functions). Fastest model diffs. PostgreSQL 9.5+ only.

Ruby Authentication and OAuth - Ruby Authentication and Ruby OAuth

Ruby Libraries for implementing Ruby authentications schemes

• Ruby [Ruby Devise (https://github.com/plataformatec/devise - Devise is a flexible Ruby authentication solution for Rails based on Warden

• Ruby [Omniauth (https://github.com/intridea/omniauth - OmniAuth is a flexible authentication system utilizing Rack middleware
• Ruby Warden - https://github.com/hassox/warden - General Rack Authentication Framework
• Ruby AuthLogic - https://github.com/binarylogic/authlogic - A simple ruby authentication solution
• Ruby Sorcery - https://github.com/NoamB/sorcery - Magical authentication for Rails 3 & 4
• Ruby CanCanCan - https://github.com/CanCanCommunity/cancancan) Authorization gem for Rails (continued version of CanCan from ryanb)
• Ruby pundit - https://github.com/elabs/pundit - Minimal authorization using object oriented design.
• Ruby authority - https://github.com/nathanl/authority - ORM neutral authorization.
• Ruby doorkeeper - https://github.com/doorkeeper-gem/doorkeeper) An OAuth 2 provider for Rails
• Ruby tiddle - https://github.com/adamniedzielski/tiddle/ - Devise strategy for token authentication in API-only Ruby on Rails applications

• Compile software from source code.*

• Ruby teapot - https://github.com/ioquatix/teapot) A decentralised build tool for managing complex cross-platform projects

• Libraries for caching data.*

• Ruby rack-cache - https://github.com/rtomayko/rack-cache) HTTP Caching for Ruby Web Apps
• Ruby Dalli - https://github.com/mperham/dalli - a high performance pure Ruby client for accessing memcached servers.

• Ruby fog - https://github.com/fog/fog) The Ruby cloud services library
• Ruby aws-sdk-ruby - https://github.com/aws/aws-sdk-ruby) The official AWS SDK for Ruby

• Content management systems*

• Ruby Refinery CMS - http://www.refinerycms.com) An extendable Ruby on Rails CMS that supports Rails 3.2 and 4.2
• Ruby Comfortable Mexican Sofa - https://github.com/comfy/comfortable-mexican-sofa) A powerful Rails 4/5 CMS Engine
• Ruby Browser - http://www.browsercms.org/) Humane Content Management for Rails
• Ruby Locomotive - http://www.locomotivecms.com/) a brand new CMS system with super sexy UI and cool features
• Ruby Radiant - http://radiantcms.org/) A no-fluff, open source content management system
• Ruby Nesta - http://nestacms.com/) A lightweight CMS, implemented in Sinatra
• Ruby alchemy_cms - https://github.com/AlchemyCMS/alchemy_cms) the most powerful, user friendly and flexible Rails CMS
• Ruby weby - https://github.com/cercomp/weby) Newbie CMS in Ruby on Rails

• Libraries and tools for analyzing, parsing and manipulation codebases.*
• Ruby sonarlint-intellij - https://github.com/SonarSource/sonarlint-intellij - An IDE extension that helps you detect and fix quality issues as you write code.
• Ruby Rubocop - https://github.com/bbatsov/rubocop - A Ruby static code analyzer, based on the community Ruby style guide.
• Ruby ruby-lint - https://github.com/YorickPeterse/ruby-lint - ruby-lint is a static code analysis tool for Ruby
• Ruby brakeman - https://github.com/presidentbeef/brakeman - Static analysis tool which checks Ruby on Rails applications for security vulnerabilities
• Ruby reek - https://github.com/troessner/reek - Code smell detector for Ruby
• Ruby Breezer - https://github.com/lambda2/breezer - Lock your Gemfile dependencies to safe versions.

• Libraries for building command-line application.*

• Ruby Commander - http://visionmedia.github.io/commander/ - The complete solution for Ruby command-line executables
• Ruby Thor - https://github.com/erikhuda/thor - Thor is a toolkit for building powerful command-line interfaces

• Libraries for storing configuration options.*

Ruby CSS and Styling - Ruby CSS and Ruby Styling - CSS and Styling - CSS and Styling

• Ruby sass - https://github.com/sass/sass) A CSS preproccessor
  • Ruby sass-rails - https://github.com/rails/sass-rails) Rails stylesheet engine for Sass
• Ruby less-rails - https://github.com/metaskills/less-rails) The dynamic stylesheet language for the Rails
• Ruby compass - https://github.com/Compass/compass) A a Stylesheet Authoring Environment
• Ruby bootstrap-sass - https://github.com/twbs/bootstrap-sass) Official Sass port of Bootstrap
• Ruby foundation-rails - https://github.com/zurb/foundation-rails) Foundation for Rails
• Ruby bootswatch-rails - https://github.com/maxim/bootswatch-rails) Bootswatches converted to SCSS ready to use in Rails
• Ruby bourbon - https://github.com/thoughtbot/bourbon) A lightweight mixin library for Sass

• Libraries for validating data. Used for forms in many cases.*

• Ruby kangal - https://github.com/lab2023/kangal - Extended validation gem for email, subdomain, credit card, tax number etc
• Ruby bin_checker - https://github.com/lab2023/bin_checker - BIN validator for Turkish Banks

• Libraries for visualizing data.*

• Ruby prosperity - https://github.com/smathieu/prosperity) The easiest way to graph data from your Rails models

Ruby Database Drivers

Ruby Libraries for connecting and operating databases

• Ruby Relational Database Drivers:
  • Ruby ruby-pg - https://bitbucket.org/ged/ruby-pg) Ruby interface to the PostgreSQL >= 8.4
  • Ruby mysql2 - https://github.com/brianmario/mysql2) A modern, simple and very fast Mysql library for Ruby
  • Ruby sqlite3-ruby - https://github.com/sparklemotion/sqlite3-ruby) Ruby bindings for the SQLite3 embedded database

• Ruby NoSQL Database Drivers:

• Libraries for working with dates and times.*

• Ruby stamp - https://github.com/jeremyw/stamp) Date and time formatting for humans
• Ruby chronic - https://github.com/mojombo/chronic) Natural language date/time parser

• Ruby Libraries for debugging and developing

• Ruby byebug - https://github.com/deivid-rodriguez/byebug - Debugging in Ruby 2
• Ruby debugger - https://github.com/cldwalker/debugger - port of ruby-debug that works on 1.9.2 and 1.9.3
• Ruby puts_debuggerer - https://github.com/AndyObtiva/puts_debuggerer - Debugger-less debugging FTW

• Software and libraries for DevOps.*

• Ruby Puppet - https://github.com/puppetlabs/puppet - Server automation framework and application
• Ruby Chef - https://github.com/chef/chef - A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.
• Ruby Vagrant - https://www.vagrantup.com/ - Vagrant is a tool for building and distributing development environments.
• Ruby Capistrano - http://capistranorb.com/ - Remote multi-server automation tool
• Ruby Mina - https://github.com/mina-deploy/mina) Really fast deployer and server automation tool
• Ruby Nanobox - https://github.com/nanobox-io/nanobox - A micro-PaaS (μPaaS) for creating consistent, isolated, Ruby environments deployable anywhere https://nanobox.io.

• Libraries to create packaged executables for release distribution.*

• Ruby fpm - https://github.com/jordansissel/fpm) Building packages for multiple platforms (deb, rpm, etc) with great ease and sanity.

• Libraries for generating project documentation.*

• Ruby Dictum - https://github.com/Wolox/dictum - A tool that let's you create automatic documentation of your Rails API endpoints through your tests.
• Ruby rdoc - https://github.com/rdoc/rdoc) HTML and online documentation for Ruby projects
• Ruby yard - https://github.com/lsegal/yard) A Ruby Documentation tool

• Libraries for downloading.*

• Ruby GitHub Starred Repos Downloader - https://github.com/LeonardoCardoso/gsrd - gsrd downloads your public starred repos. Just in case you want to keep a backup of them from time to time.

• Ruby Active Merchant - https://github.com/activemerchant/active_merchant - A simple payment abstraction library extracted from Shopify.
• Ruby Spree - https://github.com/spree/spree - A complete open source e-commerce solution for Ruby on Rails.
• Ruby Square SDK - https://github.com/square/square-ruby-sdk - Use this gem to integrate Square payments into your app and grow your business with Square APIs including Catalog, Customers, Employees, Inventory, Labor, Locations, and Orders.
• Ruby PayPal Merchant SDK - https://github.com/paypal/merchant-sdk-ruby - Provides Ruby APIs for processing payments, recurring payments, subscriptions and transactions using PayPal's Merchant APIs.

• Libraries for sending and parsing email.*

• Ruby mail - https://github.com/mikel/mail) A Really Ruby Mail Library
• Ruby mailman - https://github.com/mailman/mailman) An incoming mail processing microframework in Ruby

• Libraries for Ruby version and environment management.*

• Ruby chruby - https://github.com/postmodern/chruby - Changes the current Ruby
• Ruby chgems - https://github.com/postmodern/chgems - Chroot for RubyGems
• Ruby rvm - https://rvm.io/ - Ruby Version Manager
• Ruby rbenv - http://rbenv.org/ - Groom your app’s Ruby environment
• Ruby ruby-install - https://github.com/postmodern/ruby-install - Installs Ruby, JRuby, Rubinius, MagLev or MRuby
• Ruby ruby-build - https://github.com/sstephenson/ruby-build - Compile and install Ruby
• Ruby Nanobox - https://github.com/nanobox-io/nanobox - A tool for creating isolated Ruby environments for consistency across teams and application stages (dev, staging, production, etc.) https://nanobox.io.

• Libraries for exception and error handling.*

• Ruby Exception Notification - https://github.com/smartinez87/exception_notification - A set of notifiers for sending notifications when errors occur in a Rack/Rails application
• Ruby Errbit - http://errbit.github.io/errbit - The open source, self-hosted error catcher
• Ruby Airbrake - https://github.com/airbrake/airbrake - The official Airbrake library for Ruby on Rails (and other Rack based frameworks)
• Ruby Better Errors - https://github.com/charliesome/better_errors - Better error page for Rack apps

• Libraries for handling file uploads.*

• Ruby paperclip - https://github.com/thoughtbot/paperclip) Easy file attachment management for ActiveRecord
• Ruby dragonfly - https://github.com/markevans/dragonfly) On-the-fly processing - suitable for image uploading in Rails, Sinatra and much more
• Ruby carrierwave - https://github.com/carrierwaveuploader/carrierwave) Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks
• Ruby attache - https://github.com/choonkeat/attache - Yet another approach to file upload https://attache-demo.herokuapp.com

• Libraries for flipping features*

• Ruby abstract_feature_branch - https://github.com/AndyObtiva/abstract_feature_branch) a gem that enables developers to easily branch by abstraction
• Ruby helioth - https://github.com/gmontard/helioth) Manage feature flipping and rollout
• Ruby flipper - https://github.com/jnunemaker/flipper) feature flipping for ANYTHING
• Ruby flip - https://github.com/pda/flip) Flip lets you declare and manage feature flags, backed by cookies (private testing) and database (site-wide)
• Ruby rollout - https://github.com/FetLife/rollout) Feature flippers.

• Libraries for providing foreign function interface.*

• Libraries for working with forms.*

• Ruby simple_form - https://github.com/plataformatec/simple_form) Forms made easy for Rails
• Ruby formtastic - https://github.com/justinfrench/formtastic) A Rails form builder plugin with semantically rich and accessible markup
• Ruby bootstrap_form - https://github.com/bootstrap-ruby/bootstrap_form) A Rails form builder that makes it super easy to integrate Bootstrap v4-style forms into your Rails application

• Awesome game development libraries.*

• Ruby Gosu - https://www.libgosu.org/ - A 2D game development library for the Ruby and C++ programming languages

• Libraries for geocoding addresses and working with latitudes and longitudes.*

• Ruby geocoder - https://github.com/alexreisner/geocoder) Complete Ruby geocoding solution
• Ruby Geokit - https://github.com/geokit/geokit - Geokit gem provides geocoding and distance/heading calculations.

• Libraries for working with Git VCS*

• Ruby katip - https://github.com/lab2023/katip - Change logger for Git initialized projects

• Libraries for working with graphical user interface applications.*

• Ruby glimmer - https://github.com/AndyObtiva/glimmer) Ruby Desktop Development GUI Library
• Ruby shoes - https://github.com/shoes/shoes) A tiny graphical app kit for ruby
• Ruby shoes4 - https://github.com/shoes/shoes4) the next version of Shoes

• Libraries for making Ruby faster.*

• Ruby EventMachine - https://github.com/eventmachine/eventmachine - EventMachine: fast, simple event-processing library for Ruby programs
• Ruby Celluloid - https://celluloid.io/ - Actor-based concurrent object framework for Ruby. It has its own [awesomeness]] - https://github.com/sashaegorov/awesome-celluloid).

• Libraries for working with HTML, XML & CSS.*

• Ruby Nokogiri - http://www.nokogiri.org/)
• Ruby loofah - https://github.com/flavorjones/loofah) A general library for manipulating and transforming HTML/XML documents and fragments

• Libraries for working with HTTP.*

• Ruby httparty - https://github.com/jnunemaker/httparty) Makes http fun again!
• Ruby faraday - https://github.com/lostisland/faraday) Simple, but flexible HTTP client library, with support for multiple backends.
• Ruby http - https://github.com/httprb/http) A simple Ruby DSL for making HTTP requests
• Ruby excon - https://github.com/excon/excon) Usable, fast, simple HTTP(S) 1.1 for Ruby
• Ruby nestful - https://github.com/maccman/nestful) Simple Ruby HTTP/REST client with a sane API
• Ruby response_code - https://github.com/torokmark/response_code) Response Code in readable way

Ruby Imagery

Ruby Libraries for manipulating images

• Ruby rmagick - https://github.com/rmagick/rmagick) An interface to the ImageMagick and GraphicsMagick image processing libraries
  • [minimagick]] - https://github.com/minimagick/minimagick) Minified version of rmagick
• Ruby chunky_png - https://github.com/wvanbergen/chunky_png) Read/write access to PNG images in pure Ruby
• Ruby image_optim - https://github.com/toy/image_optim) Optimize images using multiple utilities
• Ruby magickly - https://github.com/afeld/magickly) image manipulation as a (plugin-able) service

• Libraries for woking with i18n.*

• Ruby i18n - https://github.com/svenfuchs/i18n - Basic internationalization(i18n) library for Ruby
• Ruby globalize - https://github.com/globalize/globalize) Rails I18n de-facto standard library for ActiveRecord model/data translation
• Ruby i18n-tasks - https://github.com/glebm/i18n-tasks) Manage translations in ruby applications with the awesome power of static analysis

• Libraries for generating and working with log files.*

• Ruby Logstash - https://github.com/elastic/logstash) Logstash is a tool for managing events and logs.

• Libraries for Machine Learning.*

• Ruby PredictionIO Ruby SDK - https://github.com/PredictionIO/PredictionIO-Ruby-SDK - The PredictionIO Ruby SDK provides a convenient API to quickly record your users' behavior and retrieve personalized predictions for them
• Ruby m2cgen - https://github.com/BayesWitnesses/m2cgen - A CLI tool to transpile trained classic ML models into a native Ruby code with zero dependencies.

• Frameworks and libraries for MapReduce.*

• Libraries for managing multi-tenant apps.*

• Ruby Apartment - https://github.com/influitive/apartment - Database multi-tenancy for Rack (and Rails) applications

• Libraries for working with human languages.*

• Ruby Treat - https://github.com/louismullie/treat - Treat is a toolkit for natural language processing and computational linguistics in Ruby

• Libraries for network programming.*

• Libraries that implement Object-Relational Mapping or data mapping techniques.*

• Relational Databases

• Ruby ActiveRecord - https://www.ruby-toolbox.com/projects/activerecord - Databases on Rails. Build a persistent domain model by mapping database tables to Ruby classes
• Ruby DataMapper - http://datamapper.org/ - DataMapper is an Object Relational Mapper written in Ruby. The goal is to create an ORM which is fast, thread-safe and feature rich.
• Ruby Sequel - http://sequel.jeremyevans.net/ - The Database Toolkit for Ruby

• NoSQL Databases

• Ruby Mongoid - http://mongoid.org - Mongoid (pronounced mann-goyd) is an Object-Document-Mapper (ODM) for MongoDB written in Ruby.
• Ruby Ohm - https://github.com/soveran/ohm - Object-Hash Mapping for Redis

• Libraries for package and dependency management.*

• Ruby RubyGems - https://rubygems.org/ - RubyGems is a package manager for the Ruby programming language that provides a standard format for distributing Ruby programs and libraries
• Ruby Bundler - http://bundler.io - Bundler provides a consistent environment for Ruby projects by tracking and installing the exact gems and versions that are needed
• Ruby Homebrew - http://brew.sh - Homebrew installs the stuff you need that Apple didn’t
• Ruby Homebrew Cask - http://caskroom.io/ - Cask provides a friendly homebrew-style CLI workflow for the administration of Mac applications distributed as binaries

• Ruby kaminari - https://github.com/amatsuda/kaminari) A Scope & Engine based, clean, powerful, customizable and sophisticated paginator
• Ruby will_paginate - https://github.com/mislav/will_paginate) Pagination library for Rails 3, Sinatra, Merb, DataMapper, and more
• Ruby order_query - https://github.com/glebm/order_query) Keyset pagination to find the next or previous record(s) relative to the current one efficiently, e.g. for infinite scroll.

• Ruby DocRaptor - https://github.com/DocRaptor/docraptor-ruby) Wrapper library for [DocRaptor's]] - https://docraptor.com) Ruby-based HTML-to-PDF API
• Ruby wicked_pdf - https://github.com/mileszs/wicked_pdf) PDF generator (from HTML) plugin for Ruby on Rails
• Ruby pdfkit - https://github.com/pdfkit/pdfkit) HTML+CSS to PDF using wkhtmltopdf
• Ruby prawn - https://github.com/prawnpdf/prawn) Fast, Nimble PDF Writer for Ruby
• Ruby InvoicePrinter - https://github.com/strzibny/invoice_printer - Super simple PDF invoicing in Ruby (built on top of Prawn).

• Ruby rabbit - https://github.com/rabbit-shocker/rabbit) A programable presentaton tool by Ruby
• Ruby reveal-ck - https://github.com/jedcn/reveal-ck) Reveal.js presentations with a Ruby toolset

• Libraries for woking with processes or threads*

• Ruby Parallel - https://github.com/grosser/parallel - Ruby parallel processing made simple and fast

• Ruby bullet - https://github.com/flyerhzm/bullet - help to kill N+1 queries and unused eager loading

• Ruby Rpush - https://github.com/rpush/rpush - The push notification service for Ruby.
• Ruby apn_sender - https://github.com/arthurnn/apn_sender - Background worker to send Apple Push Notifications over a persistent TCP socket.
• Ruby Houston - https://github.com/nomad/houston - A simple gem for sending Apple Push Notifications.
• Ruby webpush - https://github.com/zaru/webpush - Encryption Utilities for Web Push protocol

• Libraries for working with event and task queues.*

• Ruby Resque - https://github.com/resque/resque) A Redis-backed Ruby library for creating background jobs, placing them on multiple queues.
• Job - https://github.com/tobi/delayed_job) — Database backed asynchronous priority queue.
• Ruby Qu - https://github.com/bkeepers/qu) A Ruby library for queuing and processing background jobs.
• Ruby Sidekiq - https://github.com/mperham/sidekiq) Simple, efficient background processing for Ruby

• Libraries for developing RESTful APIs.*

• Ruby Grape - http://intridea.github.io/grape/ - An opinionated micro-framework for creating REST-like APIs in Ruby.
• API - https://github.com/rails-api/rails-api - Rails for API only applications
• Ruby jbuilder - https://github.com/rails/jbuilder - Create JSON structures via a Builder-style DSL
• Ruby rabl - https://github.com/nesquena/rabl - General Ruby templating with json, bson, xml, plist and msgpack support
• Ruby active_model_serializers - https://github.com/rails-api/active_model_serializers - ActiveModel::Serializer implementation and Rails hooks
• Ruby oat - https://github.com/ismasan/oat - Adapters-based API serializers with Hypermedia support for Ruby apps (HAL, Siren, JSONAPI).
• Ruby APIcasso - https://github.com/ErvalhouS/APIcasso - An abstract API design as a Rails-based mountable engine. RESTfullize your legacy code.

• Ruby FaaStRuby - https://faastruby.io - Serverless Software Development Platform for Ruby and Crystal developers.

• Libraries for manipulating Excel, Google Spreadsheets, Numbers, OpenOffice and LibreOffice files*

• Ruby spreadsheet - https://github.com/zdavatz/spreadsheet - The Spreadsheet Library is designed to read and write Spreadsheet Documents.
• Ruby caxlsx - https://github.com/caxlsx/caxlsx - Caxlsx excels at helping you generate beautiful Office Open XML Spreadsheet documents.
• Ruby caxlsx_rails - https://github.com/caxlsx/caxlsx_rails - Axlsx-Rails provides an Axlsx renderer so you can move all your spreadsheet code from your controller into view files.
• Ruby roo - https://github.com/roo-rb/roo - Roo implements read access for all spreadsheet types and read/write access for Google spreadsheets.
• Ruby google-spreadsheet-ruby - https://github.com/gimite/google-spreadsheet-ruby - This is a library to read/write Google Spreadsheet.
• Ruby rubyXL - https://github.com/weshatheleopard/rubyXL - rubyXL is a gem which allows the parsing, creation, and manipulation of Microsoft Excel (.xlsx/.xlsm) Documents
• Ruby Odf-report - https://github.com/sandrods/odf-report - Generates ODF files, given a template (.odt) and data, replacing tags
• Ruby simple_xlsx_writer - https://github.com/harvesthq/simple_xlsx_writer - Just as the name says, simple writter for Office 2007+ Excel files
• Ruby remote_table - https://github.com/seamusabshere/remote_table - Open local or remote XLSX, XLS, ODS, CSV (comma separated), TSV (tab separated), other delimited, fixed-width files, and Google Docs.
• Ruby acts_as_caxlsx - https://github.com/caxlsx/acts_as_caxlsx - acts_as_caxlsx lets you turn any ActiveRecord::Base inheriting class into an excel spreadsheet.
• Ruby activeadmin-caxlsx - https://github.com/caxlsx/activeadmin-caxlsx - This gem uses caxlsx to provide excel/xlsx downloads for resources in Active Admin.
• Ruby to_spreadsheet - https://github.com/glebm/to_spreadsheet - Render XLSX from Rails using existing views
• Ruby write_xlsx - https://github.com/cxn03651/write_xlsx - write_xlsx is a gem to create a new file in the Excel 2007+ XLSX format.
• Ruby excel_rails - https://github.com/asanghi/excel_rails - Allows you to program spreadsheets using .rxls views
• Ruby sheets - https://github.com/bspaulding/Sheets - Work with spreadsheets easily in a native ruby format.
• Ruby workbook - https://github.com/murb/workbook - Workbook contains workbooks, as in a table, contains rows, contains cells, reads/writes excel, ods and csv and tab separated files…
• Ruby Spreadsheet report - https://github.com/gnoso/spreadsheet_report - Simple tool for running queries against ActiveRecord and putting them into a Google Spreadsheet.
• Ruby oxcelix - https://github.com/gbiczo/oxcelix - A fast Excel 2007/2010 (.xlsx) file parser that returns a collection of Matrix objects
• Ruby wrap_excel - https://github.com/tomiacannondale/wrap_excel - WrapExcel is to wrap the win32ole, and easy to use Excel operations with ruby. Detailed description please see the README.
• Ruby write_xlsx_rails - https://github.com/maxd/write_xlsx_rails - xlsx renderer for Rails base on write_xlsx gem
• Ruby Fastsheet - https://github.com/dkkoval/fastsheet - Fast spreadsheet reader using Rust native extensions.

• Ruby whenever - https://github.com/javan/whenever) Cron jobs in Ruby
• Ruby resque-scheduler - https://github.com/resque/resque-scheduler) A light-weight job scheduling system built on top of resque
• Ruby rufus-scheduler - https://github.com/jmettraux/rufus-scheduler) Scheduler for Ruby
• Ruby Clockwork - https://github.com/tomykaira/clockwork) Clockwork is a cron replacement. It runs as a lightweight, long-running Ruby process which sits alongside your web processes (Mongrel/Thin) and your worker processes (DJ/Resque/Minion/Stalker) to schedule recurring work at particular times or dates.

• Libraries for scientific computing and data analyzing.*

• Libraries and software for indexing and performing search queries on data.*

• Ruby Thinking Sphinx - https://github.com/pat/thinking-sphinx - Sphinx plugin for ActiveRecord/Rails
• Ruby elasticsearch-ruby - https://github.com/elastic/elasticsearch-ruby - Ruby integrations for Elasticsearch
• Ruby Searchkick - https://github.com/ankane/searchkick - Intelligent search made easy
• Ruby Algoliasearch Rails - https://github.com/algolia/algoliasearch-rails/ - AlgoliaSearch integration to your favorite ORM
• Ruby PgSearch - https://github.com/Casecommons/pg_search - PostgreSQL's full text search
• Ruby Rroonga - https://github.com/ranguba/rroonga - The Ruby bindings of Groonga
• Ruby Sunspot - https://github.com/sunspot/sunspot - Solr-powered search for Ruby objects

• Libs for analytics, monitoring*

• Ruby rack-google-analytics - https://github.com/kangguru/rack-google-analytics) Simple Rack middleware for implementing google analytics tracking
• Ruby DataDog - https://github.com/DataDog/dogapi-rb) A monitoring service for IT, operations and development teams
• Ruby Instrumental - https://github.com/Instrumental/instrumental_agent-ruby) High-scale, non-blocking agent for [Instrumental]] - https://instrumentalapp.com) application monitoring
• Ruby Keen IO - https://github.com/keenlabs/keen-gem) Build analytics features directly into your Ruby apps

• Ruby jekyll - https://github.com/jekyll/jekyll) A blog-aware, static site generator in Ruby
• Ruby middleman - https://github.com/middleman/middleman)

• App templates for creating apps quickly*

• Ruby suspenders - https://github.com/thoughtbot/suspenders) A Rails template with our standard defaults, ready to deploy to Heroku
• Ruby ruby2-rails4-bootstrap-heroku - https://github.com/diowa/ruby2-rails4-bootstrap-heroku) A starter application based on Ruby 2, Rails 4 and Bootstrap for Sass, deployable on Heroku
• Ruby rails-bootstrap - https://github.com/RailsApps/rails-bootstrap) Rails 4.1 starter app with the Bootstrap front-end framework
• Ruby rails4-starterkit - https://github.com/starterkits/rails4-starterkit) Rails 4.1 starter app with production ready performance, security, and authentication
• Ruby cybele - https://github.com/lab2023/cybele - Rails 4.x template with responder, simple form, haml, exception notification, etc …

Ruby Text Processing

• Ruby Libraries for parsing and manipulating texts

• General

• Specific Formats

• Parser

• Ruby Yomu - https://github.com/Erol - Read text and metadata from files and documents (.doc, .docx, .pages, .odt, .rtf, .pdf)

• Libraries for tagging items.*

• Ruby acts-as-taggable-on - https://github.com/mbleigh/acts-as-taggable-on - A tagging plugin for Rails applications that allows for custom tagging along dynamic contexts.

• Libraries and tools for templating and lexing.*

• Ruby Slim - https://github.com/slim-template/slim) A templating lang that reduce the syntax to the essential parts without becoming cryptic.
  • Ruby slim-rails - https://github.com/slim-template/slim-rails) Rails port of Slim lang
• Ruby Haml - https://github.com/haml/haml) HTML Abstraction Markup Language - A Markup Haiku
  • Ruby haml-rails - https://github.com/indirect/haml-rails) Rails port of Haml lang
• Ruby Tilt - https://github.com/rtomayko/tilt)
• Ruby Liquid - https://github.com/Shopify/liquid)

• Libraries for testing codebases and generating test data.*

• Testing Frameworks
• Ruby RSpec - http://rspec.info/ - BDD for Ruby
• Ruby MiniTest - https://github.com/seattlerb/minitest - minitest provides a complete suite of testing facilities supporting TDD, BDD, mocking, and benchmarking
• Ruby Cucumber] * [[Ruby Cucumber Github - https://github.com/cucumber/cucumber/wiki - Cucumber is a tool that executes plain-text functional descriptions as automated tests
• Ruby Cucumber Site - https://cucumber.io/ - Behaviour Driven Development with elegacy and joy
• Ruby Spinach - https://github.com/codegram/spinach - Spinach is a high-level BDD framework that leverages the expressive Gherkin language (used by Cucumber) to help you define executable specifications of your application or library's acceptance criteria.
• Ruby Rubytest - http://rubyworks.github.io/rubytest - Rubytest is a testing meta-framework useful for creating highly customize test suites or building whole new test frameworks.
• Ruby BRASS - http://rubyworks.github.io/brass - Bare-metal Ruby assertion system standard used by Rubytest.
• Ruby Lemon - http://rubyworks.github.io/lemon - Strict unit test system built on top of Rubytest.
• Ruby shoulda-matchers - https://github.com/thoughtbot/shoulda-matchers - Collection of testing matchers extracted from Shoulda
• Ruby capybara - https://github.com/jnicklas/capybara - Acceptance test framework for web applications
• Mock
• Ruby RSpec-mocks - https://github.com/rspec/rspec-mocks - RSpec's 'test double' framework, with support for stubbing and mocking
• Ruby Mocha - http://gofreerange.com/mocha/docs/ - Mocking and stubbing library with JMock/SchMock syntax, which allows mocking and stubbing of methods on real (non-mock) classes.
• Ruby FlexMock - https://github.com/jimweirich/flexmock - Flexible mocking for Ruby testing
• Fake Data
• Ruby Faker - https://github.com/stympy/faker - A library for generating fake data such as names, addresses, and phone numbers
• Ruby ffaker - https://github.com/ffaker/ffaker - Faker Refactored.
• Ruby Forgery - https://github.com/sevenwire/forgery - Easy and customizable generation of forged data.
• Code Coverage
• Ruby simplecov - https://github.com/colszowka/simplecov) Code coverage for Ruby 1.9+ with a powerful configuration library and automatic merging of coverage
• Load Testing

• Error Handler

• Libraries for accessing third party APIs.*

• Ruby koala - https://github.com/arsduo/koala) A lightweight, flexible library for Facebook
• Ruby fb_graph - https://github.com/nov/fb_graph) A full-stack Facebook Graph API wrapper
• Ruby twitter - https://github.com/sferik/twitter) A Ruby interface to the Twitter API
• Ruby tweetstream - https://github.com/tweetstream/tweetstream) A simple library for consuming Twitter's Streaming API
• Ruby gitlab - https://github.com/NARKOZ/gitlab) Ruby wrapper and CLI for the GitLab API
• Ruby octokit.rb - https://github.com/octokit/octokit.rb) Ruby toolkit for the GitHub API
• Ruby instagram - https://github.com/Instagram/instagram-ruby-gem) The official gem for the Instagram API
• Ruby linkedin - https://github.com/hexgnu/linkedin) Ruby wrapper for the LinkedIn API
• Ruby twilio-ruby - https://github.com/twilio/twilio-ruby) A Ruby gem for communicating with the Twilio API and generating TwiML
• Ruby viewpoint-spws - https://github.com/zenchild/viewpoint-spws) A Microsoft Sharepoint Web Services library for Ruby.
• Ruby youtube_it - https://github.com/kylejginavan/youtube_it) An object-oriented Ruby wrapper for the YouTube GData API
• Ruby flickraw - https://github.com/hanklords/flickraw) Flickraw is a library to access flickr api
• Ruby f00px - https://github.com/500px/f00px) Official 500px api ruby gem
• Ruby rspotify - https://github.com/guilhermesad/rspotify) Ruby wrapper for the Spotify Web API

• Libraries for parsing URLs.*

• Libraries for manipulating video and GIFs.*

• Ruby streamio-ffmpeg - https://github.com/streamio/streamio-ffmpeg) Simple yet powerful ruby FFmpeg wrapper for reading metadata and transcoding movies

• Libraries for extracting web contents.*

• Libraries for scraping websites.*

• Ruby upton - https://github.com/propublica/upton) A batteries-included framework for easy web-scraping
• Ruby metainspector - https://github.com/jaimeiniesta/metainspector)

• Web development frameworks.*

• Ruby Ruby On Rails - http://rubyonrails.org/ - Ruby on Rails is a full-stack web framework optimized for programmer happiness and sustainable productivity
• Ruby Sinatra - http://www.sinatrarb.com/ - Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort.
• Ruby Padrino - http://www.padrinorb.com/ - The Godfather of Sinatra provides a full-stack agnostic framework on top of Sinatra
• Ruby Cramp - http://cramp.in/ - Cramp is a fully asynchronous real-time web application framework in Ruby
• Ruby Lotus - http://lotusrb.org/ - A newborn complete Ruby web framework that is simple, fast and lightweight.
• Ruby Cuba - http://cuba.is/ - Cuba is a microframework for web development originally inspired by Rum, a tiny but powerful mapper for Rack applications.
• Ruby Pakyow - https://pakyow.com/ - Pakyow is an open-source framework for the modern web. Build working software faster with a development process that remains friendly to both designers and developers. It's built for getting along.
• Ruby Hyperstack - https://hyperstack.org/ - A complete Isomorphic Ruby Framework using React, Opal and Rails

• App server interface*

• Ruby puma - https://github.com/puma/puma) A simple, fast, threaded, and highly concurrent HTTP 1.1 server for Ruby/Rack applications.
• Ruby thin - https://github.com/macournoyer/thin) A thin and fast web server
• Ruby trinidad - https://github.com/trinidad/trinidad) Run Rails or Rack applications within an embedded Apache Tomcat container.
• Ruby unicorn - https://github.com/defunkt/unicorn) An HTTP server for Rack applications designed to only serve fast clients.
• Ruby passenger - https://github.com/phusion/passenger) A modern web server and application server for Ruby, Python, and Node.js.
• Ruby pow - https://github.com/basecamp/pow) Pow treats files and directories as ruby objects giving you more power and flexibility.
• Ruby goliath - https://github.com/postrank-labs/goliath) is a non-blocking Ruby web server framework.

• Libraries for woking with WebSocket.*

• Ruby Faye - http://faye.jcoglan.com/ruby.html - Simple pub/sub messaging for the web
• Ruby websocket-rails - https://github.com/websocket-rails/websocket-rails - Plug and play websocket support for ruby on rails.

1. Miscellaneous

• Useful libraries or tools that don't fit in the categories above.*

• Ruby packetfu - https://github.com/packetfu/packetfu) A mid-level packet manipulation library for Ruby.
• Ruby chatterbot - https://github.com/muffinista/chatterbot) A straightforward ruby-based Twitter Bot Framework, using OAuth to authenticate
• Ruby sneakers - https://github.com/jondot/sneakers) A fast background processing framework for Ruby and RabbitMQ
• Ruby ransack - https://github.com/activerecord-hackery/ransack) Object-based searching.
• Ruby cinch - https://github.com/cinchrb/cinch) The IRC Bot Building Framework
• Ruby pry - https://github.com/pry/pry) An IRB alternative and runtime developer console
• Ruby rib - http://rib.godfat.org/) A lightweight and extensible IRB replacement
• Ruby jazz_hands - https://github.com/nixme/jazz_hands/) Pry-based enhancements for the default Rails 3 and 4 consoles
• Ruby awesome_print - https://github.com/awesome-print/awesome_print) A Ruby library that pretty prints Ruby objects in full color exposing their internal structure with proper indentation.
• Ruby friendly_id - https://github.com/norman/friendly_id) Slugging and permalink plugins for ActiveRecord
• Ruby backup - https://github.com/backup/backup) An elegant DSL in Ruby for performing backups on UNIX-like systems
• Ruby kss - https://github.com/kneath/kss) Documenting CSS and generating styleguides
• Ruby AASM - https://github.com/aasm/aasm - A library for adding finite state machines to Ruby classes
• Ruby JsonCompare - https://github.com/a2design-inc/json-compare - Returns the difference between two JSON files
• Ruby blankable - https://github.com/lab2023/blankable - Adds blank slates to index view in Rails
• Ruby tcmb_currency - https://github.com/lab2023/tcmb_currency - T.C.M.B. currencies for Money Gem
• Ruby enumerize - https://github.com/brainspec/enumerize - Enumerated attributes with I18n and ActiveRecord/Mongoid support
• Ruby lol_dba - https://github.com/plentz/lol_dba - lol_dba is a small package of rake tasks that scan your application models and displays a list of columns that probably should be indexed.
• Ruby annotate-models - https://github.com/ctran/annotate_models - Annotate ActiveRecord models
• Ruby fast_attributes - https://github.com/applift/fast_attributes - FastAttributes adds attributes with their types to the class
• Ruby Github Changelog Generator - https://github.com/skywinder/Github-Changelog-Generator) — automatically generate change log from your tags, issues, labels and pull requests on GitHub.
• Ruby Letter Opener - https://github.com/ryanb/letter_opener) — Preview email in the default browser instead of sending it.
• Ruby Auto HTML - https://github.com/dejan/auto_html) — Transforming URLs to appropriate resource (image, link, YouTube, Vimeo video,…).
• Ruby OctoLinker - https://github.com/OctoLinker/browser-extension - Navigate through projects on GitHub.com efficiently with the OctoLinker browser extension.
• Ruby BetterDocs - https://github/khusnetdinov/betterdocs - Documentation with collection practices in ruby. Good for new ruby developers and beginners.

• Plugins for various editors.*

• Ruby vim-ruby - https://github.com/vim-ruby/vim-ruby) Vim/Ruby Configuration Files
• Ruby vim-rails - https://github.com/tpope/vim-rails) rails.vim: Ruby on Rails power tools

1. Resources

• Where to discover things (libraries, news e.g) about Ruby.*

• Ruby The Ruby Toolbox - https://www.ruby-toolbox.com/)
• Ruby RubyGems - https://rubygems.org/)
• Ruby RubyDaily - http://rubydaily.org - Community driven news
• Ruby Ruby Weekly - http://rubyweekly.com/ - A free, once–weekly e-mail round-up of Ruby news and articles.
• Ruby Ruby5 - https://ruby5.codeschool.com/ - The latest news in the Ruby and Rails community
• Ruby RubyFlow - http://www.rubyflow.com - Ruby Programming Community Link Blog
• Ruby Ruby Curated Resources - https://hackr.io/tutorials/learn-ruby)

• People in Ruby World*

• Ruby Yukihiro "Matz" Matsumoto - https://twitter.com/yukihiro_matz - Creator of Ruby lang
• Ruby David Heinemeier Hansson - https://twitter.com/dhh - Creator of Rails framework
• Ruby Koichi Sasada - https://github.com/ko1 - Ruby core committer and the developer of YARV
• Ruby Aaron Patterson - http://tenderlovemaking.com/ - Committer to Nokogiri, Ruby, and Ruby on Rails
• Ruby Avdi Grimm - http://devblog.avdi.org/ - Host of Ruby Tapas webcasts
• Ruby Aman Gupta - http://tmm1.net/ - Ruby core committer

1. Other Awesome Lists

Other amazingly awesome lists can be found in the [awesome-awesomeness]] - https://github.com/bayandin/awesome-awesomeness) list.

Fair Use Sources:

• https://github.com/Sdogruyol/awesome-ruby
• Ruby [ddg>Awesome Ruby lists DuckDuckGo search
• Ruby [github>Awesome Ruby GitHub search