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awesome-ruby

A collection of awesome Ruby libraries, tools, frameworks and software
https://github.com/eric-erki/awesome-ruby

Last synced: about 10 hours ago
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Abstraction
- ActiveInteraction - Manage application specific business logic.
- Apotomo - Based on Cells, Apotomo gives you widgets and encapsulation, bubbling events, AJAX page updates, rock-solid testing and more.
- Cells - View Components for Rails.
- Decent Exposure - A helper for creating declarative interfaces in controllers.
- Docile - A tiny library that lets you map a DSL (domain specific language) to your Ruby objects in a snap.
- Interactor - Interactor provides a common interface for performing complex interactions in a single request.
- Light Service - Series of Actions with an emphasis on simplicity.
- Mutations - Compose your business logic into commands that sanitize and validate input.
- Rails Event Store (RES) - A library for publishing, consuming, storing and retrieving events. It's your best companion for going with an event-driven architecture for your Rails application.
- Surrounded - Encapsulated related objects in a single system to add behavior during runtime. Extensible implementation of DCI.
- Trailblazer - Trailblazer is a thin layer on top of Rails. It gently enforces encapsulation, an intuitive code structure and gives you an object-oriented architecture.
- Waterfall - A slice of functional programming to chain ruby services and blocks, thus providing a new approach to flow control.
- wisper - A micro library providing Ruby objects with Publish-Subscribe capabilities.
- dry-rb - dry-rb is a collection of next-generation Ruby libraries, each intended to encapsulate a common task.
- Responders - A set of Rails responders to dry up your application.
- ActiveInteraction - Manage application specific business logic.
Admin Interface
- ActiveScaffold - ActiveScaffold provides quick and powerful user interfaces for CRUD (create, read, update, delete) operations for Rails applications. It's excellent for generating admin interfaces, managing Data-Heavy Applications, creating Widgets or for quick prototyping. ActiveScaffold is completly customizable and offers a bunch of additional features including searching, pagination, layout control and overrides of fields, forms and templates.
- Administrate - A Rails engine that helps you put together a super-flexible admin dashboard, by Thoughtbot.
- bhf - A simple to use Rails-Engine-Gem that offers an admin interface for trusted user.
- Trestle - A modern, responsive admin framework for Rails. Build a back-end in minutes that will grow with the needs of your application.
- Typus - Ruby on Rails control panel to allow trusted users edit structured content.
Analytics
- Ahoy - A solid foundation to track visits and events in Ruby, JavaScript, and native apps.
- Analytical - Gem for managing multiple analytics services in your rails app.
- Gabba - Simple way to send server-side notifications to Google Analytics.
- Impressionist - Rails Plugin that tracks impressions and page views.
- Legato - Model analytics reports and queries against the official Google Analytics Reporting API.
- Rack::Tracker - Rack middleware that can be hooked up to multiple services and exposing them in a unified fashion.
- Staccato - Track analytics into the official Google Analytics Collection API.
API Builder and Discovery
- ActiveModel::Serializers - JSON serialization of objects.
- Blanket - A dead simple API wrapper.
- Crepe - The thin API stack.
- Fast JSON API - A lightning fast JSON:API serializer for Ruby Objects.
- Her - an ORM that maps REST resources to Ruby objects. Designed to build applications that are powered by a RESTful API instead of a database.
- jbuilder - Create JSON structures via a Builder-style DSL.
- JSONAPI::Resources - JSONAPI::Resources, or "JR", provides a framework for developing a server that complies with the JSON API specification.
- JSONAPI::Utils - JSONAPI::Utils is built on top of JSONAPI::Resources taking advantage of its resource-driven style and bringing an easy way to build modern JSON APIs with no or less learning curve.
- Jsonite - A tiny, HAL-compliant JSON presenter for your APIs.
- Pliny - Opinionated template Sinatra app for writing excellent APIs in Ruby.
- rabl - General ruby templating with json, bson, xml, plist and msgpack support.
- Rails::API - Rails for API only applications.
- Spyke - Interact with REST services in an ActiveRecord-like manner.
- Version Cake - An unobtrusive way to version APIs in your Rails app.
- versionist - A plugin for versioning Rails based RESTful APIs.
Assets
- Asset Sync - Synchronises Assets between Rails and S3.
- Autoprefixer - Parse CSS and add vendor prefixes to rules by Can I Use.
- Bourbon - A Lightweight Sass Tool Set.
- bower-rails - Bower support for Rails projects.
- Emoji - Exposes the Phantom Open Emoji library unicode/image assets and APIs for working with them.
- Less Rails - The dynamic stylesheet language for the Rails asset pipeline.
- Less - Leaner CSS, in your browser or Ruby.
- Sprockets - Rack-based asset packaging system.
- Torba - Bower-less bundler for Sprockets.
- Webpacker - Use Webpack to manage app-like JavaScript modules in Rails.
Authentication and OAuth
- Authlogic - Authlogic is a clean, simple, and unobtrusive ruby authentication solution.
- Clearance - Small and simple email & password based authentication for Rails.
- JWT - JSON Web Token implementation in Ruby.
- Knock - Seamless JWT authentication for Rails API.
- Monban - A very simple and extensible user authentication library for rails.
- OmniAuth - A library that standardizes multi-provider authentication utilizing Rack middleware.
- Rodauth - Authentication and account management framework for Rack applications.
- Shield - Authentication protocol for use in your routing and model context.
- Sorcery - Magical Authentication for Rails 4, and Rails 5.
- warden - General Rack Authentication Framework.
- Doorkeeper - An OAuth2 provider for Rails.
- OAuth2 - A Ruby wrapper for the OAuth 2.0 protocol.
Authorization
- acl9 - Acl9 is a role-based authorization system that provides a concise DSL for securing your Rails application.
- AccessGranted - Multi-role and whitelist based authorization gem for Rails.
- ActionPolicy - Authorization framework for Ruby and Rails applications. Composable, extensible and performant.
- Authority - ORM-neutral way to authorize actions in your Rails app.
- CanCanCan - Continuation of CanCan, an authorization Gem for Ruby on Rails.
- Declarative Authorization - An authorization Rails plugin using a declarative DSL for specifying authorization rules in one place.
- Petergate - Easy to use and read action and content based authorizations.
Automation
- Danger - Automate your team's conventions surrounding code review.
Caching
- Action caching for Action Pack - Action caching for Action Pack.
- Dalli - A high performance pure Ruby client for accessing memcached servers.
- Garner - A set of Rack middleware and cache helpers that implement various caching strategies.
- IdentityCache - A blob level caching solution to plug into ActiveRecord.
- Kashmir - Kashmir is a Ruby DSL that makes serializing and caching objects a snap.
- Readthis - High performance, pooled, ActiveSupport compliant caching with Redis.
- Record Cache - Cache Active Model Records in Rails 3.
- Second Level Cache - Write-Through and Read-Through caching library for ActiveRecord 4.
- redis-store - Redis Store provides a full set of stores (Cache, I18n, Session, HTTP Cache) for modern Ruby frameworks like: Ruby on Rails, Sinatra, Rack, Rack::Cache and I18n. It supports object marshalling, timeouts, single or multiple nodes, and namespaces.
Captchas and anti-spam
- Invisible Captcha - Unobtrusive and flexible spam protection based on the honeypot strategy. It also provides a time-sensitive form submission.
- Rakismet - Easy Akismet and TypePad AntiSpam integration for Rails.
- reCAPTCHA - reCaptcha API helpers for ruby apps.
- Voight-Kampff - A Ruby gem that detects bots, spiders, crawlers and replicants.
CLI Builder
- Clamp - A command-line application framework.
- Commander - The complete solution for Ruby command-line executables.
- GLI - Git-Like Interface Command Line Parser.
- Hanami CLI - General purpose Command Line Interface (CLI) framework for Ruby.
- Main - A class factory and DSL for generating command line programs real quick.
- Optimist - A commandline option parser for Ruby that just gets out of your way.
- Rake - A make-like build utility for Ruby.
- Slop - Simple Lightweight Option Parsing.
- Terrapin - A small command line library (Formerly Cocaine).
- Thor - A toolkit for building powerful command-line interfaces.
- TTY - Toolbox for developing CLI clients.
CLI Utilities
- Awesome Print - Pretty print your Ruby objects with style -- in full color and with proper indentation
- Betty - Friendly English-like interface for your command line. Don't remember a command? Ask Betty.
- colorize - Extends String class or add a ColorizedString with methods to set text color, background color and text effects.
- colorls - Beautifies the `ls` command, with color and font-awesome icons.
- formatador - STDOUT text formatting.
- Paint - Simple and fast way to set ANSI terminal colors.
- Pastel - Terminal output styling with intuitive and clean API.
- Ru - Ruby in your shell.
- Ruby/Progressbar - The most flexible text progress bar library for Ruby.
- Tabulo - Ruby ASCII table generator. Produce highly readable terminal tables, even from large, unwieldy data sets and streams.
- TablePrint - Slice your data from multiple DB tables into a single CLI view.
- Terminal Table - Ruby ASCII Table Generator, simple and feature rich.
- Tmuxinator - Create and manage complex tmux sessions easily.
- Whirly - A simple, colorful and customizable terminal spinner library for Ruby.
Cloud
- AWS SDK for Ruby - The official AWS SDK for Ruby.
- browse-everything - Multi-provider Rails engine providing access to files in cloud storage.
- Fog - The Ruby cloud services library.
- humidifier - Programmatically generate and manage AWS CloudFormation templates, stacks, and change sets.
CMS
- ComfortableMexicanSofa - Powerful Rails 5.2+ CMS Engine.
- Fae - Flexible, open source, Rails CMS engine.
- Publify - A self hosted Web publishing platform on Rails.
- Storytime - Rails 4+ CMS and bloging engine, with a core focus on content.
- Alchemy CMS - A powerful, userfriendly and flexible Open Source Rails CMS.
- Camaleon CMS - A dynamic and advanced content management system based on Ruby on Rails 4.
- PushType - A next generation, open source content management system for Ruby on Rails.
- Radiant - A no-fluff, open source content management system designed for small teams.
- Alchemy CMS - A powerful, userfriendly and flexible Open Source Rails CMS.
Code Analysis and Metrics
- Barkeep - Barkeep is a fast, fun way to review code. Engineering organizations can use it to keep the bar high.
- Brakeman - A static analysis security vulnerability scanner for Ruby on Rails applications.
- Cane - Code quality threshold checking as part of your build.
- Coverband - Rack middleware to help measure production code coverage.
- Fasterer - Make your Rubies go faster with this command line tool highly inspired by fast-ruby and Sferik's talk at Baruco Conf.
- Flay - Flay analyzes code for structural similarities. Differences in literal values, variable, class, method names, whitespace, programming style, braces vs do/end, etc are all ignored. Making this totally rad.
- Flog - Flog reports the most tortured code in an easy to read pain report. The higher the score, the more pain the code is in.
- fukuzatsu - Complexity analysis tool with a rich web front-end.
- MetricFu - A fist full of code metrics.
- Pippi - A utility for finding suboptimal Ruby class API usage, focused on runtime analysis.
- Reek - Code smell detector for Ruby.
- Rubycritic - A Ruby code quality reporter.
- Scientist - A Ruby library for carefully refactoring critical paths.
- Sorbet - A static type checker for Ruby.
- Suture - A Ruby gem that helps you refactor your legacy code.
- Traceroute - A Rake task gem that helps you find the dead routes and actions for your Rails 3+ app
Code Formatting
- prettier - A prettier plugin for the Ruby language.
- Rubocop Rails - A RuboCop extension focused on enforcing Rails best practices and coding conventions.
- Rubocop Rspec - Code style checking for RSpec files
- Rubocop Performance - A RuboCop extension focused on code performance checks.
Code Highlighting
- CodeRay - Fast and easy syntax highlighting for selected languages.
- pygments.rb - A Ruby wrapper for the Python pygments syntax highlighter.
Code Loaders
- Zeitwerk - An efficient and thread-safe Ruby code loader.
Coding Style Guides
- Best-Ruby - Ruby Tricks, Idiomatic Ruby, Refactoring & Best Practices.
- fast-ruby - Writing Fast Ruby. Collect Common Ruby idioms.
- Fundamental Ruby - Fundamental programming ruby with examples. Threads, design patterns, data structures, OOP SOLID principle, algorithms.
- Ruby Operators - A webpage showing awesome names for different Ruby operators.
Concurrency and Parallelism
- Concurrent Ruby - Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.
- EventMachine - An event-driven I/O and lightweight concurrency library for Ruby.
- forkoff - brain-dead simple parallel processing for ruby.
- Parallel - Run any code in parallel Processes (> use all CPUs) or Threads (> speedup blocking operations).
Configuration
- Chamber - Surprisingly customizable convention-based approach to managing your app's configuration.
- Configatron - Simple and feature rich configuration system for Ruby apps.
- Configus - Helps you easily manage environment specific settings.
- dotenv - Loads environment variables from `.env`.
- Econfig - Flexible configuration for Rails applications.
- ENVied - ensure presence and type of your app's ENV-variables
- Envyable - The simplest YAML to ENV config loader.
- Figaro - Simple, Heroku-friendly Rails app configuration using `ENV` and a single YAML file.
- Global - Provides accessor methods for your configuration data.
- Sail - A lightweight Rails engine that brings an admin panel for managing configuration settings on a live Rails app.
Core Extensions
- Addressable - Addressable is a replacement for the URI implementation that is part of Ruby's standard library. It more closely conforms to RFC 3986, RFC 3987, and RFC 6570 (level 4), providing support for IRIs and URI templates.
- Finishing Moves - Small, focused, incredibly useful methods added to core Ruby classes. Includes the endlessly useful `nil_chain`.
- Hamster - Efficient, immutable, and thread-safe collection classes for Ruby.
- Hanami::Utils - Lightweight, non-monkey-patch class utilities for Hanami and Ruby app.
- Ruby Facets - The premiere collection of general purpose method extensions and standard additions for Ruby.
- ActiveAttr - What ActiveModel left out.
- Virtus - Attributes on Steroids for Plain Old Ruby Objects.
- AttrExtras - Takes some boilerplate out of Ruby with methods like attr_initialize.
- FastAttributes - FastAttributes adds attributes with their types to the class.
Country Data
- Carmen - A repository of geographic regions.
- Countries - All sorts of useful information about every country packaged as pretty little country objects.
- i18n_data - country/language names and 2-letter-code pairs, in 85 languages, for country/language i18n.
- normalize_country - Convert country names and codes to a standard, includes a conversion program for XMLs, CSVs and DBs.
- Phonelib - Ruby gem for phone validation and formatting using Google libphonenumber library data.
- Phony - Fast international phone number (E164 standard) normalizing, splitting and formatting.
- validates_zipcode - Postal code / zipcode validation for Rails, supporting 233 country codes.
CRM
- Fat Free CRM - An open source Ruby on Rails based customer relationship management platform.
Cryptocurrencies and Blockchains
- Blockchain Lite - Build your own blockchains with crypto hashes; revolutionize the world with blockchains, blockchains, blockchains one block at a time.
- Peatio - Most Advanced Cryptocurrency open-source assets exchange.
Dashboards
- Blazer - Simple data viewer using only SQL. Output to table, chart, and maps.
- Dashing-Rails - The exceptionally handsome dashboard framework for Rails.
- Smashing - Smashing is a Sinatra based framework that lets you build beautiful dashboards. This project is the maintained spiritual successor to the Dashing framework.
Data Visualization
- GeoPattern - Create beautiful generative geometric background images from a string.
- LazyHighCharts - A simple and extremely flexible way to use HighCharts from ruby code. Tested on Ruby on Rails, Sinatra and Nanoc, but it should work with others too.
- RailRoady - Ruby on Rails 3/4 model and controller UML class diagram generator.
- Rails Erd - Generate Entity-Relationship Diagrams for Rails applications.
- Ruby/GraphViz - Ruby interface to the GraphViz graphing tool.
- Chartkick - Create beautiful Javascript charts with one line of Ruby. Works with Rails, Sinatra and most browsers (including IE 6).
Database Drivers
- Cassandra Driver - A pure ruby driver for Apache Cassandra with asynchronous io and configurable load balancing, reconnection and retry policies.
- DataObjects - An attempt to rewrite existing Ruby database drivers to conform to one, standard interface.
- mongo-ruby-driver - MongoDB Ruby driver.
- mysql2 - A modern, simple and very fast Mysql library for Ruby (binding to libmysql).
- Neography - A thin Ruby wrapper to the Neo4j Rest API.
- Redic - Lightweight Redis Client.
- redis-rb - A Ruby client that tries to match Redis' API one-to-one, while still providing an idiomatic interface.
- SQLite3 - Ruby bindings for the SQLite3 embedded database.
- SQL Server - The SQL Server adapter for ActiveRecord.
- TinyTDS - FreeTDS bindings for Ruby using DB-Library.
- ruby-pg - Ruby interface to PostgreSQL 8.3 and later.
Database Tools
- connection_pool - Generic connection pooling for Ruby, that can be used with anything, e.g. Redis, Dalli, etc.
- Database Cleaner - Database Cleaner is a set of strategies for cleaning your database in Ruby.
- Database Consistency - An easy way to check that application constraints and database constraints are in sync.
- Foreigner - Adds foreign key helpers to migrations and correctly dumps foreign keys to schema.rb.
- Large Hadron Migrator - Online MySQL schema migrations without locking the table.
- Lol DBA - Scan your models and displays a list of columns that probably should be indexed.
- Polo - Creates sample database snapshots to work with real world data in development.
- PgHero - Postgres insights made easy.
- Rails DB - Database Viewer and SQL Query Runner.
- Rein - Database constraints made easy for ActiveRecord.
- SchemaPlus - SchemaPlus provides a collection of enhancements and extensions to ActiveRecord
- SecondBase - Seamless second database integration for Rails. SecondBase provides support for Rails to manage dual databases by extending ActiveRecord tasks that create, migrate, and test your application.
- Seedbank - Seedbank allows you to structure your Rails seed data instead of having it all dumped into one large file.
- Seed dump - Rails 4 task to dump (parts) of your database to db/seeds.rb.
- Seed Fu - Advanced seed data handling for Rails.
- Standby - Read from standby databases for ActiveRecord (formerly Slavery).
- Upsert - Upsert on MySQL, PostgreSQL, and SQLite3. Transparently creates functions (UDF) for MySQL and PostgreSQL; on SQLite3, uses INSERT OR IGNORE.
Date and Time Processing
- biz - Time calculations using business hours.
- business_time - Support for doing time math in business hours and days.
- ByStar - Find ActiveRecord objects by year, month, fortnight, week and more!
- Chronic - A natural language date/time parser written in pure Ruby.
- groupdate - The simplest way to group temporal data in ActiveRecord, arrays and hashes.
- local_time - Rails Engine for cache-friendly, client-side local time.
- montrose - a simple library for expressing, serializing, and enumerating recurring events in Ruby
- time-lord - Adds extra functionality to the time class.
- time_diff - Calculates the difference between two time.
- timezone - Accurate current and historical timezones and transformations, with support for Geonames and Google latitude - longitude timezone lookups.
- TZinfo - Provides daylight savings aware transformations between times in different timezones.
- validates_timeliness - Date and time validation plugin for ActiveModel and Rails.
- working_hours - A modern ruby gem allowing to do time calculation with working hours.
- yymmdd - Tiny DSL for idiomatic date parsing and formatting.
Debugging Tools
- Byebug - A simple to use, feature rich debugger for Ruby 2.
- Pry Byebug - Pry navigation commands via byebug.
- Seeing Is Believing - Displays the results of every line of code in your file.
- Xray - A development tool that reveals your UI's bones.
Decorators
- Draper - Draper adds an object-oriented layer of presentation logic to your Rails application.
DevOps Tools
- Backup - Provides an elegant DSL in Ruby for performing backups on UNIX-like systems.
- Blender - A modular system orchestration framework with pluggable driver and host discovery.
- BOSH - Cloud Foundry BOSH is an open source tool chain for release engineering, deployment and lifecycle management of large scale distributed services.
- Centurion - A mass deployment tool for Docker fleets.
- Chef - A systems integration framework, built to bring the benefits of configuration management to your entire infrastructure.
- Deployinator - Deployinator is a deployment framework extracted from Etsy.
- Itamae - Simple and lightweight configuration management tool inspired by Chef.
- Kochiku - Kochiku is a distributed platform for test automation.
- Logstash - Logs/event transport, processing, management, search.
- Mina - Really fast deployer and server automation tool.
- Puppet - An automated administrative engine for your Linux, Unix, and Windows systems, performs administrative tasks (such as adding users, installing packages, and updating server configurations) based on a centralized specification.
- Request-log-analyzer - Create reports based on your log files. Supports Rails, Apache, MySQL, Delayed::Job, and other formats.
- Rubber - The rubber plugin enables relatively complex multi-instance deployments of RubyOnRails applications to Amazon's Elastic Compute Cloud (EC2).
- SSHKey - SSH private and public key generator in pure Ruby (RSA & DSA).
- Sunzi - Server provisioning utility for minimalists
- Ruby-LXC - Native ruby binding for Linux containers.
- Lita - ChatOps for Ruby: A pluggable chat bot framework usable with any chat service.
Diff
- Diffy - Easy Diffing With Ruby.
- gemdiff - Find source repositories for gems. Open, compare, and update outdated gem versions.
- JsonCompare - Returns the difference between two JSON files.
Documentation
- Annotate - Add a comment documenting the current schema to the top or bottom of each of your ActiveRecord models.
- Apipie - Rails API documentation and display tool using Ruby syntax.
- Doctor - Doctor is a Documentation Server for all your docs in github.
- Documentation - A Rails engine to provider the ability to add documentation to a Rails application.
- GitHub Changelog Generator - Automatically generate change log from your tags, issues, labels and pull requests on GitHub.
- Gollum - A simple, Git-powered wiki with a sweet API and local frontend.
- grape-swagger - Add swagger compliant documentation to your Grape API.
- Hanna - An RDoc formatter built with simplicity, beauty and ease of browsing in mind.
- Hologram - A markdown based documentation system for style guides. It parses comments in your CSS and helps you turn them into a beautiful style guide.
- Inch - Inch is a documentation measurement and evalutation tool for Ruby code, based on YARD.
- RDoc - RDoc produces HTML and command-line documentation for Ruby projects.
- rspec_api_documentation - Automatically generate API documentation from RSpec.
E-Commerce and Payments
- Active Merchant - A simple payment abstraction library extracted from Shopify.
- Braintree - Braintree Ruby bindings.
- Conekta - Conekta Ruby bindings.
- credit_card_validations - A ruby gem for validating credit card numbers, generating valid numbers, Luhn checks.
- Koudoku - Robust subscription support for Ruby on Rails apps using Stripe, including out-of-the-box pricing pages, payment pages, and subscription management.
- Payola - Drop-in Rails engine for accepting payments with Stripe.
- Piggybak - Modular, Extensible open-source ecommerce solution for Ruby on Rails.
- ROR Ecommerce - A Rails e-commerce platform.
- Solidus - An open source, eCommerce application for high volume retailers.
- Spree - Spree is a complete open source e-commerce solution for Ruby on Rails.
- SquareConnect - Square's SDK for payments and other Square APIs.
- stripe-ruby - Stripe Ruby bindings.
- Paypal Merchant SDK - Official Paypal Merchant SDK for Ruby.
Ebook
- Eeepub - EeePub is a Ruby ePub generator.
- Gepub - A generic EPUB library for Ruby : supports EPUB 3.
- Git Scribe - Basically the best way to write an ebook.
- Mobi - A Ruby way to read MOBI format metadata.
- Review - Re:VIEW is flexible document format/conversion system.
Email
- Gibbon - API wrapper for the Mailchimp e-mail marketing platform.
- Griddler - Simplify receiving email in Rails.
- Incoming - Incoming! helps you receive email in your Rack apps.
- LetterOpener - Preview mail in the browser instead of sending.
- Mail - A Really Ruby Mail Library.
- Mailman - An incoming mail processing microframework in Ruby.
- Maily - A Rails Engine to manage, test and navigate through all your email templates of your app, being able to preview them directly in your browser.
- MidiSmtpServer - The highly customizable ruby SMTP-Service library with builtin support for AUTH and SSL/STARTTLS, 8BITMIME and SMTPUTF8, IPv4 and IPv6 and more.
- Pony - The express way to send mail from Ruby.
- premailer-rails - CSS styled emails without the hassle.
- Roadie - Roadie tries to make sending HTML emails a little less painful by inlining stylesheets and rewriting relative URLs for you inside your emails.
- Sup - A curses threads-with-tags style email client.
- Markerb - Allows you to render multipart e-mails from a single template written in Markdown.
Encryption
- bcrypt-ruby - bcrypt-ruby is a Ruby binding for the OpenBSD bcrypt() password hashing algorithm.
- Sym - A time-saving symmetric encryption gem based on OpenSSL that uses 256bit (password-encrypted) keys. Read the key from STDIN, a file, ENV or, on a Mac: OS-X Keychain.
- Themis - crypto library for painless data security, providing symmetric and asymmetric encryption, secure sockets with forward secrecy, for mobile and server platforms.
- Symmetric Encryption - Transparently encrypt ActiveRecord, Mongoid, and MongoMapper attributes. Encrypt passwords in configuration files. Encrypt entire files at rest.
Environment Management
- chruby - Change your current Ruby. No shims, no crazy options or features, ~90 LOC.
- fry - Simple ruby version manager for fish.
- gem_home - A tool for changing your $GEM_HOME.
- ruby-install - Installs Ruby, JRuby, Rubinius, MagLev or MRuby.
- Uru - Uru is a lightweight, multi-platform command line tool that helps you use the multiple rubies on your 32/64-bit Linux, OS X, or Windows systems.
- Tokaido - Ruby, Rails, SQLite and Redis encapsulated in a single drag-and-drop OS X app, designed to make installing a working RoR environment easy for beginners.
Error Handling
- Airbrake - The official Airbrake library for Ruby on Rails (and other Rack based frameworks).
- Bugsnag - Error monitoring for Rails, Sinatra, Rack, and plain Ruby apps.
- Errbit - The open source, self-hosted error catcher.
- Exception Handler - Custom error pages.
- Exception Notification - A set of notifiers for sending notifications when errors occur in a Rack/Rails application.
- Nesty - Nested exceptions for Ruby.
- Honeybadger - Exception, uptime, and performance monitoring for Ruby.
Feature Flippers and A/B Testing
- Motorhead - A Rails Engine framework that helps safe and rapid feature prototyping.
- Rollout - Feature flippers.
- Split - Rack Based AB testing framework.
- Vanity - an A/B testing framework for Rails that is datastore agnostic.
File Upload
- attache - Standalone image and file server to decouple your app from file management concerns.
- CarrierWave - Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks.
- DragonFly - A Ruby gem for on-the-fly processing - suitable for image uploading in Rails, Sinatra and much more!.
- PaperClip - Easy file attachment management for ActiveRecord. Deprecated as of May 14, 2018.
- rack-secure-upload - Upload files securely.
- Refile - A modern file upload library for Ruby applications, Refile is an attempt by CarrierWave's original author to fix the design mistakes and overengineering in CarrierWave.
File System Listener
- Guard - A command line tool to easily handle events on file system modifications.
- Guard::LiveReload - Automatically reload your browser when 'view' files are modified.
- Listen - The Listen gem listens to file modifications and notifies you about the changes.
- Rerun - Restarts an app when the filesystem changes. Uses growl and FSEventStream if on OS X.
Form Builder
- Abracadabra - The gem that swaps out text with a fully-compliant Rails form in one click.
- Cocoon - Dynamic nested forms using jQuery made easy; works with formtastic, simple_form or default forms.
- Rapidfire - Making dynamic surveys should be easy!
Game Development
- Yeah - Practical Ruby video game framework.
Gem Generators
- Gemsmith - A command line interface for smithing new Ruby gems.
Geolocation
- Geocoder - A complete geocoding solution for Ruby. With Rails it adds geocoding (by street or IP address), reverse geocoding (find street address based on given coordinates), and distance queries.
- geoip - Searches a GeoIP database for a given host or IP address, and returns information about the country where the IP address is allocated, and the city, ISP and other information.
- Geokit - Geokit gem provides geocoding and distance/heading calculations.
- Google Maps for Rails - Enables easy Google map + overlays creation in Ruby apps.
- rgeo - Geospatial data library. Spatial data types, geometric and spherical calculations, and WKT/WKB serialization.
Git Tools
- ginatra - A web frontend for Git repositories.
- git-auto-bisect - Find the commit that broke master.
- git_reflow - An automated quality control workflow for Agile teams.
- git-spelunk - Dig through git blame history.
- git-up - Fetch and rebase all locally-tracked remote branches.
- git-whence - Find which merge a commit came from.
- Overcommit - A fully configurable and extendable Git hook manager.
- Rugged - Ruby bindings to libgit2.
- Git Cop - Enforces consistent Git commits.
GraphQL
- graphql-batch
- graphql-client - A library for declaring, composing and executing GraphQL queries.
- graphql-guard - A simple field-level authorization.
- graphql-ruby - Ruby implementation of GraphQL.
GUI
- qtbindings - Allows the QT Gui toolkit to be used from Ruby.
- Shoes - Shoes makes building little graphical programs for Mac, Windows, and Linux super simple.
- RubyGnome2 - Ruby language bindings for the GNOME 2.0 development environment.
HTML/XML Parsing
- HappyMapper - Object to XML mapping library, using Nokogiri.
- Oga - An XML/HTML parser written in Ruby. Oga does not require system libraries such as libxml, making it easier and faster to install on various platforms.
- Ox - A fast XML parser and Object marshaller.
- ROXML - Custom mapping and bidirectional marshalling between Ruby and XML using annotation-style class methods, via Nokogiri or LibXML.
HTTP Clients and tools
- excon - Usable, fast, simple Ruby HTTP 1.1. It works great as a general HTTP(s) client and is particularly well suited to usage in API clients.
- Faraday - an HTTP client lib that provides a common interface over many adapters (such as Net::HTTP) and embraces the concept of Rack middleware when processing the request/response cycle.
- Device Detector - A precise and fast user agent parser and device detector, backed by the largest and most up-to-date user agent database.
- Http Client - Gives something like the functionality of libwww-perl (LWP) in Ruby.
- HTTP - The HTTP Gem: a simple Ruby DSL for making HTTP requests.
- httparty - Makes http fun again!
- Http-2 - Pure Ruby implementation of HTTP/2 protocol
- Patron - Patron is a Ruby HTTP client library based on libcurl.
- RESTClient - Simple HTTP and REST client for Ruby, inspired by microframework syntax for specifying actions.
- Savon - Savon is a SOAP client for the Ruby programming language.
- Sawyer - Secret user agent of HTTP, built on top of Faraday.
- Sniffer
- Typhoeus - Typhoeus wraps libcurl in order to make fast and reliable requests.
- HTTPX - acknowledges the ease-of-use of the [http](https://github.com/httprb/http) gem API (itself inspired by python requests library) which aims at reusing the same facade, extending it for the use cases which the http gem doesn't support.
Image Processing
- MiniMagick - A ruby wrapper for ImageMagick or GraphicsMagick command line.
- Phasion - Ruby wrapper around pHash, the perceptual hash library for detecting duplicate multimedia files.
- PSD.rb - Parse Photoshop files in Ruby with ease.
- RMagick - RMagick is an interface between Ruby and ImageMagick.
- ruby-vips - A binding for the libvips image processing library.
- Skeptick - Skeptick is an all-purpose DSL for building and running ImageMagick commands.
Implementations/Compilers
- JRuby - A Java implementation of the Ruby language.
- MRuby - Lightweight Ruby. Can be linked and embedded in your application.
- Opal - Ruby to Javascript compiler.
- Rubinius - An implementation of the Ruby programming language. Rubinius includes a bytecode virtual machine, Ruby syntax parser, bytecode compiler, generational garbage collector, just-in-time (JIT) native machine code compiler, and Ruby Core and Standard libraries.
- TruffleRuby - A high performance implementation of the Ruby programming language. Built on the GraalVM by Oracle Labs.
Internationalization
- FastGettext - Ruby internationalization tool with less memory, simple, clean namespace and threadsafe.
- Globalize - Globalize builds on the I18n API in Ruby on Rails to add model translations to ActiveRecord models.
- i18n-tasks - Manage missing and unused translations with the awesome power of static analysis.
- i18n - Ruby Internationalization and localization solution.
- rails-i18n - Repository for collecting Locale data for Rails I18n as well as other interesting, Rails related I18n stuff.
- Termit - Translations with speech synthesis in your terminal.
- Tolk - A web interface for doing i18n translations packaged as a Rails engine.
- twitter-cldr-rb - Ruby implementation of the ICU (International Components for Unicode) that uses the Common Locale Data Repository to format dates, plurals, and more.
IRB
- Clipboard - Access to the system clipboard on Linux, MacOS and Windows.
- Hirb - A mini view framework for console/irb that's easy to use, even while under its influence. Console goodies include a no-wrap table, auto-pager, tree and menu.
- irbtools - Improvements for Ruby's IRB.
- Looksee - A tool for illustrating the ancestry and method lookup path of objects. Handy for exploring unfamiliar codebases.
- Pry - A powerful alternative to the standard IRB shell for Ruby.
- rib - A lightweight and extensible IRB replacement.
Logging
- Cabin - Structured+contextual logging experiments in Ruby.
- Fluentd - Fluentd collects events from various data sources and writes them to files, database or other types of storages.
- HttpLog - Log outgoing HTTP requests.
- Log4r - Log4r is a comprehensive and flexible logging library for use in Ruby programs.
- Logging - A flexible logging library for use in Ruby programs based on the design of Java's log4j library.
- Lograge - An attempt to tame Rails' default policy to log everything.
- MongoDB Logger - MongoDB logger for Rails.
- Scrolls - Simple logging.
- Syslogger - A drop-in replacement for the standard Logger Ruby library, that logs to the syslog instead of a log file.
- Timber - Simple structured logging with context.
- Yell - Your Extensible Logging Library.
- Semantic Logger - Scalable, next generation enterprise logging for Ruby.
Machine Learning
- AI4R - Algorithms covering several Artificial intelligence fields.
- PredictionIO Ruby SDK - The PredictionIO Ruby SDK provides a convenient API to quickly record your users' behavior and retrieve personalized predictions for them.
- rb-libsvm - Ruby language bindings for LIBSVM. SVM is a machine learning and classification algorithm.
- ruby-fann - Ruby library for interfacing with FANN (Fast Artificial Neural Network).
- rumale - A machine learninig library with interfaces similar to Scikit-Learn.
- weka - Machine learning and data mining algorithms for JRuby.
- Awesome Machine Learning with Ruby - A Curated List of Ruby Machine Learning Links and Resources.
Markdown Processors
- kramdown - Kramdown is yet-another-markdown-parser but fast, pure Ruby, using a strict syntax definition and supporting several common extensions.
- Maruku - A pure-Ruby Markdown-superset interpreter.
- Redcarpet - A fast, safe and extensible Markdown to (X)HTML parser.
- word-to-markdown - Gem to convert Microsoft Word documents to Markdown.
Measurements
- Measured - Wrapper objects which encapsulate measurements and their associated units in Ruby.
- Ruby Units - Provides classes and methods to perform unit math and conversions.
Mobile Development
- dryrun - Try any Android library on your smartphone directly from the command line.
- Ruboto - A platform for developing full stand-alone apps for Android using the Ruby language and libraries.
- RubyMotion - A revolutionary toolchain that lets you quickly develop and test full-fledged native iOS and OS X applications for iPhone, iPad, Mac and Android.
- Ruby Push Notifications - iOS, Android and Windows Phone Push notifications made easy.
- Rpush - The push notification service for Ruby which supports Apple Push Notification Service, Google Cloud Messaging, Amazon Device Messaging and Windows Phone Push Notification Service.
- webpush - Encryption Utilities for Web Push protocol
- fastlane - Connect all iOS deployment tools into one streamlined workflow.
Money
- eu_central_bank - A gem that calculates the exchange rate using published rates from European Central Bank.
- Monetize - A library for converting various objects into Money objects.
- Money - A Ruby Library for dealing with money and currency conversion.
Music and Sound
- Coltrane - A music theory library with a command-line interface.
- Maestro - A Slack-Powered music bot for Spotify
- play ► - Your company's dj.
Natural Language Processing
- Parslet - A small Ruby library for constructing parsers in the PEG (Parsing Expression Grammar) fashion.
- pocketsphinx-ruby - Ruby speech recognition with Pocketsphinx.
- Pragmatic Segmenter - Pragmatic Segmenter is a rule-based sentence boundary detection gem that works out-of-the-box across many languages.
- Ruby Natural Language Processing Resources - Collection of links to Ruby Natural Language Processing (NLP) libraries, tools and software.
- Sentimental - Simple sentiment analysis with Ruby.
- Text - A collection of text algorithms including Levenshtein distance, Metaphone, Soundex 2, Porter stemming & White similarity.
- Treat - Treat is a toolkit for natural language processing and computational linguistics in Ruby.
- Treetop - PEG (Parsing Expression Grammar) parser.
- Words Counted - A highly customisable Ruby text analyser and word counter.
- Awesome NLP with Ruby - Awesome List for Practical Natural Language Processing done in Ruby.
Navigation
- active_link_to - View helper to manage "active" state of a link.
- Breadcrumbs on Rails - A simple Ruby on Rails plugin for creating and managing a breadcrumb navigation for a Rails project.
- Gretel - A Ruby on Rails plugin that makes it easy yet flexible to create breadcrumbs.
- loaf - Manages and displays breadcrumb trails in Rails app - lean & mean.
- Simple Navigation - A ruby gem for creating navigation (html list, link list or breadcrumbs with multiple levels) for your Rails 2, 3 & 4, Sinatra or Padrino.
Networking
- Dnsruby - A pure Ruby DNS client library which implements a stub resolver. It aims to comply with all DNS RFCs.
- RubyDNS - A high-performance DNS server which can be easily integrated into other projects or used as a stand-alone daemon.
Optimizations
- bootsnap - Boot large Ruby/Rails apps faster.
- fast_blank - Provides a C-optimized method for determining if a string is blank.
- yajl-ruby - A streaming JSON parsing and encoding library for Ruby (C bindings to yajl).
ORM/ODM
- DataMapper - ORM which works well with legacy databases. Last release (1.2.0) was on 13 October 2011.
- Hanami::Model - A lean Repository-pattern based ORM framework for Hanami and modern Ruby applications.
- Mongoid - An ODM (Object-Document-Mapper) framework for MongoDB in Ruby.
- MongoMapper - A Ruby Object Mapper for Mongo.
- MongoModel - Ruby ODM for interfacing with MongoDB databases.
- Neo4j.rb - A Neo4j OGM (Object-Graph-Mapper) for use in Ruby on Rails and Rack frameworks heavily inspired by ActiveRecord.
- NoBrainer - A RethinkDB ORM for Ruby
- Ohm - Object-hash mapping library for Redis.
- Perpetuity - Persistence gem for Ruby objects using the Data Mapper pattern.
- Redis-Objects - Redis Objects provides a Rubyish interface to Redis, by mapping Redis data types to Ruby objects, via a thin layer over the redis gem.
- ROM - Ruby Object Mapper (ROM) is an experimental Ruby library with the goal to provide powerful object mapping capabilities without limiting the full power of your datastore.
- Sequel - Sequel is a simple, flexible, and powerful SQL database access toolkit for Ruby.
ORM/ODM Extensions
- ActsAsParanoid - ActiveRecord plugin allowing you to hide and restore records without actually deleting them.
- Audited - Audited is an ORM extension for ActiveRecord & MongoMapper that logs all changes to your models.
- Discard - A simple ActiveRecord mixin to add conventions for flagging records as discarded.
- Espinita - Audit activerecord models like a boss.
- Logidze - Database changes log for Rails.
- marginalia - Attach comments to your ActiveRecord queries. By default, it adds the application, controller, and action names as a comment at the end of each query.
- mongoid-history - Multi-user non-linear history tracking, auditing, undo, redo for mongoid.
- PermenantRecords - Soft-delete your ActiveRecord records, like an explicit version of ActsAsParanoid.
- ActiveImporter - Define importers that load tabular data from spreadsheets or CSV files into any ActiveRecord-like ORM.
- ActiveRecord Import - a library for bulk inserting data using ActiveRecord.
- bulk_insert - A little ActiveRecord extension for helping to insert lots of rows in a single insert statement.
- data_miner - Download, pull out of a ZIP/TAR/GZ/BZ2 archive, parse, correct, and import XLS, ODS, XML, CSV, HTML, etc. into your ActiveRecord models.
- ferry - A ruby gem for easy data transfer.
- ActiveRecord::Turntable - A database sharding extension for ActiveRecord.
- ActiveValidators - An exhaustive collection of off-the-shelf and tested ActiveModel/ActiveRecord validations.
- DeepPluck - Allow you to pluck attributes from nested associations without loading a bunch of records.
- Enumerize - Enumerated attributes with I18n and ActiveRecord/Mongoid/MongoMapper support.
- Goldiloader - Automatic ActiveRecord eager loading.
- mini_record - ActiveRecord meets DataMapper, with MiniRecord you are be able to write schema inside your models.
- Acts As Tennant - Add multi-tenancy to a Rails app through a shared database strategy.
- Apartment - Multi-tenancy for Rails and ActiveRecord.
- Milia - Non-invasive multi-tenancy for Rails which supports Devise authentication out of the box.
- Acts As Commentable - Provides a single Comment model that can be attached to any model(s) within your app.
- Acts As Commentable with Threading - Similar to acts_as_commentable; however, utilizes awesome_nested_set to provide threaded comments.
- acts_as_follower - Allow any ActiveRecord model to follow any other model.
- ActiveRecord Reputation System - An Active Record Reputation System for Rails.
- ActsAsTaggableOn - A tagging plugin for ActiveRecord that allows for custom tagging along dynamic contexts.
- Acts As Votable - Allow any ActiveRecord model to be voted on, like/dislike, upvote/downvote, etc.
- Merit - Adds reputation behavior to Rails apps in the form of Badges, Points, and Rankings for ActiveRecord or Mongoid.
- Simple Feed - Fast and highly scalable read-optimized social activity feed library in pure Ruby, backed by Redis.
- Unread - Manage read/unread status of ActiveRecord objects - and it's fast.
- ranked-model - A modern row sorting library for ActiveRecord. It uses ARel aggressively and is better optimized than most other libraries.
- ActsAsTree - Extends ActiveRecord to add simple support for organizing items into parent–children relationships.
- Ancestry - Organise ActiveRecord model into a tree structure using a variation on the materialised path pattern.
- Awesome Nested Set - Awesome Nested Set is an implementation of the nested set pattern for ActiveRecord models.
- Mongoid Tree - A tree structure for Mongoid documents using the materialized path pattern.
Package Management
- Berkshelf - A Chef Cookbook manager.
- CocoaPods - The Objective-C dependency manager.
- fpm - Effing package management! Build packages for multiple platforms (deb, rpm, etc) with great ease and sanity.
- Linuxbrew - A fork of Homebrew for Linux.
- Homebrew - The missing package manager for OS X.
- Traveling Ruby - Traveling Ruby lets you create self-contained Ruby app packages for Linux and OS X.
Pagination
- Kaminari - A Scope & Engine based, clean, powerful, customizable and sophisticated paginator for modern web app frameworks and ORMs.
- order_query - A keyset pagination library to find the next or previous record(s) relative to the current one efficiently, e.g. for infinite scroll.
- Pagy - Pagy is the ultimate pagination gem that outperforms the others in each and every benchmark and comparison. More details can be found on [Pagy Wiki](https://ddnexus.github.io/pagy/index).
- will_paginate - A pagination library that integrates with Ruby on Rails, Sinatra, Merb, DataMapper and Sequel.
PDF
- CombinePDF - A Pure ruby library to merge or stump PDF files, number pages and more.
- Gimli - Utility for converting markup files to pdf files.
- HexaPDF - A Versatile PDF Creation and Manipulation Library For Ruby.
- InvoicePrinter - Super simple PDF invoicing in Ruby (built on top of Prawn).
- Kitabu - A framework for creating e-books from Markdown/Textile text markup using Ruby.
- Pdfkit - HTML+CSS to PDF using wkhtmltopdf.
- Prawn - Fast, Nimble PDF Writer for Ruby.
- RGhost - RGhost is a document creation and conversion API.
- Shrimp - A phantomjs based pdf renderer.
- Wicked Pdf - PDF generator (from HTML) plugin for Ruby on Rails.
- Wisepdf - Wkhtmltopdf wrapper done right.
Performance Monitoring
- Instrumental - Measure your application in real time with [Instrumental](http://instrumentalapp.com).
- Scout - Scout Ruby Application Monitoring Agent.
- Skylight - A smart profiler for your Rails apps that visualizes request performance.
- TraceView - Full-stack application tracing and brilliant data visualization to build faster, more reliable web apps.
Presentation Programs
- Slide Show (S9) - Write your slides / talks / presentations in plain text with markdown formatting conventions and generate (static) web pages; template packs incl. deck.js, impress.js, reveal.js, shower, s6, s5 and more.
Process Management and Monitoring
- Bluepill - Simple process monitoring tool.
- Eye - Process monitoring tool. Inspired from Bluepill and God.
- Foreman - Manage Procfile-based applications.
- God - An easy to configure, easy to extend monitoring framework written in Ruby.
- Health Monitor Rails - A mountable Rails plug-in to check health of services (Database, Cache, Sidekiq, Redis, e.t.c.) used by the Rails app.
- Procodile - Run processes in the background (and foreground) on Mac & Linux from a Procfile.
Processes
- childprocess - Cross-platform ruby library for managing child processes.
- posix-spawn - Fast Process::spawn for Rubys >= 1.8.7 based on the posix_spawn() system interfaces.
Profiler and Optimization
- batch-loader
- benchmark-ips - Provides iteration per second benchmarking for Ruby.
- bullet - Help to kill N+1 queries and unused eager loading.
- Peek - Visual status bar showing Rails performance.
- perftools.rb - gperftools (formerly known as google-perftools) for Ruby code.
- rack-mini-profiler - Profiler for your development and production Ruby rack apps.
- Rbkit - profiler for Ruby. With a GUI.
- rbspy - Sampling profiler for any Ruby process.
- ruby-prof - A code profiler for MRI rubies.
QR
- RQRCode - RQRCode is a library for creating and rendering QR codes into various formats.
Queues and Messaging
- Backburner - Backburner is a beanstalkd-powered job queue that can handle a very high volume of jobs.
- Bunny - Bunny is a popular, easy to use, well-maintained Ruby client for RabbitMQ (3.3+).
- Delayed::Job - Database backed asynchronous priority queue.
- Gush - A parallel runner for complex workflows using only Redis and Sidekiq.
- Karafka - Framework used to simplify Apache Kafka (a distributed streaming platform) based Ruby applications development.
- March Hare - Idiomatic, fast and well-maintained JRuby client for RabbitMQ.
- Resque - A Redis-backed Ruby library for creating background jobs.
- Sneakers - A fast background processing framework for Ruby and RabbitMQ.
- Sucker Punch - A single process background processing library using Celluloid. Aimed to be Sidekiq's little brother.
Rails Application Generators
- Bootstrappers - Bootstrappers generates a base Rails app using Bootstrap template and other goodies.
- Hobo - The web app builder for Rails.
- orats - Opinionated rails application templates.
- Rails Composer - The Rails generator on steroids for starter apps.
- Raygun - Builds applications with the common customization stuff already done.
- Suspenders - Suspenders is the base Rails application used at thoughtbot.
RSS
- Feed normalizer - Extensible Ruby wrapper for Atom and RSS parsers.
- Feedjira - A feed fetching and parsing library.
- Ratom - A fast, libxml based, Ruby Atom library.
- Simple rss - A simple, flexible, extensible, and liberal RSS and Atom reader.
Scheduling
- minicron - A system to manage and monitor cron jobs.
- resque-scheduler - A light-weight job scheduling system built on top of Resque.
- rufus-scheduler - Job scheduler for Ruby (at, cron, in and every jobs).
- Whenever - A Ruby gem that provides a clear syntax for writing and deploying cron jobs.
Scientific
- PyCall - Calling Python functions from the Ruby language.
- ruby-opencv - An OpenCV wrapper for Ruby.
- classifier-reborn - An active fork of Classifier, and general module to allow Bayesian and other types of classifications.
- stuff-classifier - A library for classifying text into multiple categories.
- daru - A library for storage, analysis, manipulation and visualization of data in pure Ruby.
- Daru::View - A library for easy and interactive plotting on Jupyter Notebooks and web applications.
- Rgl - A framework for graph data structures and algorithms.
- NMatrix - Fast numerical linear algebra library for Ruby.
- Numo::NArray - N-dimensional Numerical Array for Ruby.
- mdarray - Multi dimensional array implemented for JRuby inspired by NumPy.
- SciRuby - Tools for scientific computation in Ruby/Rails.
- IRuby - A Ruby kernel for Jupyter.
- statsample - A suite for basic and advanced statistics on Ruby.
- statsample-timeseries - Bioruby Statsample TimeSeries.
- statsample-glm - Generalized Linear Models extension for Statsample.
- distribution - Statistical Distributions multi library wrapper.
- minimization - Minimization algorithms on pure Ruby.
- rb-gsl - A ruby interface to GNU Scientific library, with NMatrix support.
- BioRuby - Library for developing bioinformatics software.
- bloomfilter-rb - BloomFilter(s) in Ruby: Native counting filter + Redis counting/non-counting filters.
- decisiontree - A ruby library which implements ID3 (information gain) algorithm for decision tree learning.
- algorithms - Library with documentation on when to use a particular structure/algorithm.
- jaro_winkler - Ruby & C implementation of Jaro-Winkler distance algorithm which supports UTF-8 string.
- primes-utils - A Rubygem which provides a suite of extremely fast utility methods for testing and generating primes.
- Roots - A Rubygem which provides utilities to find all the nth roots of real and complex values.
- smarter_csv - Ruby Gem for smarter importing of CSV Files as Array(s) of Hashes.
- Red Data Tools - Data processing tools for Ruby.
Search
- chewy - High-level Elasticsearch Ruby framework based on the official elasticsearch-ruby client.
- elasticsearch-ruby - Ruby integrations for Elasticsearch.
- elastics - Simple ElasticSearch client with support for migrations and ActiveRecord integration.
- Mongoid Search - Simple full text search implementation for Mongoid.
- pg_search - Builds ActiveRecord named scopes that take advantage of PostgreSQL's full text search.
- Rroonga - The Ruby bindings of Groonga.
- scoped_search - Adds a scope supporting search queries and autocompletion against existing fields on ActiveRecord models and associations.
- SearchCop - Extends your ActiveRecord models to support fulltext search engine like queries via simple query strings and hash-based queries.
- Searchkick - Searchkick learns what your users are looking for. As more people search, it gets smarter and the results get better. It’s friendly for developers - and magical for your users.
- Searchlogic - Object based searching, common named scopes, and other useful named scope tools for ActiveRecord.
- Sunspot - A Ruby library for expressive, powerful interaction with the Solr search engine.
- textacular - Exposes full text search capabilities from PostgreSQL, and allows you to declare full text indexes. Textacular extends ActiveRecord with named_scope methods making searching easy and fun!
- Thinking Sphinx - A library for connecting ActiveRecord to the Sphinx full-text search tool.
Security
- bundler-audit - Patch-level security verification for Bundler.
- Metasploit - World's most used penetration testing software.
- Rack::Protection - Rack middleware for protecting against typical Web attacks.
SEO
- FriendlyId - The "Swiss Army bulldozer" of slugging and permalink plugins for Active Record.
- MetaTags - A gem to make your Rails application SEO-friendly.
- prerender_rails - Rails middleware gem for prerendering javascript-rendered pages on the fly for SEO.
- SitemapGenerator - A framework-agnostic XML Sitemap generator written in Ruby.
Social Networking
- Decidim - free open-source participatory democracy for cities and organizations
- diaspora* - A privacy aware, distributed, open source social network.
- Discourse - A platform for community discussion. Free, open, simple.
- Mailboxer - A private message system for Rails applications.
- Mastodon - A GNU Social-compatible microblogging server.
- Social Shares - A gem to check how many times url was shared in social networks.
- Thredded - Rails 4.2+ forums/messageboards engine. Its goal is to be as simple and feature rich as possible.
Spreadsheets and Documents
- AXLSX - An excel xlsx generation library.
- Docsplit - Gem to convert Microsoft Word (and other) documents into images, pdf, pages or text.
- Roo - Implements read access for all spreadsheet types and read/write access for Google spreadsheets.
- Spreadsheet Architect - Turn any activerecord relation or ruby object collection into a XLSX, ODS, or CSV spreadsheet.
- Yomu - Read text and metadata from files and documents (.doc, .docx, .pages, .odt, .rtf, .pdf).
State Machines
- AASM - State machines for Ruby classes (plain Ruby, Rails Active Record, Mongoid).
- FiniteMachine - A plain Ruby state machine with a straightforward and expressive syntax.
- MicroMachine - A minimal finite state machine implementation in less than 50 lines of code.
- simple_states - A super-slim statemachine-like support library.
- Statesman - A statesmanlike state machine library.
- state_machines - Adds support for creating state machines for attributes on any Ruby class.
- transitions - A ruby state machine implementation.
- Workflow - A finite-state-machine-inspired API for modeling and interacting with what we tend to refer to as 'workflow'.
Static Site Generation
- High Voltage - Easily include static pages in your Rails app.
- Awesome Jekyll - A collection of awesome Jekyll tools, plugins, themes, guides and much more.
Robotics
- Artoo - Next generation robotics framework with support for different platforms: Arduino, Leap Motion, Pebble, Raspberry Pi, etc.
Serverless
- FaaStRuby - Serverless Software Development Platform for Ruby and Crystal developers.
Web Frameworks
- Hyperstack - A Complete Isomorphic Ruby Framework using React and Opal.
- Pakyow - A framework for building modern web-apps in Ruby. It helps you build working software faster with a development process that remains friendly to both designers and developers.
- Ramaze - A simple, light and modular open-source web application framework written in Ruby.
- Roda - A routing tree web framework.
Web Servers
- Thin - Tiny, fast & funny HTTP server.
WebSocket
- Inch CI - Documentation badges for Ruby projects.
- SideCI - Automated Code Review with GitHub PR. - Monitoring Style Violations, Quality, Security, Dependencies.
- GitHub Trending - Find what repositories the GitHub community is most excited about today.
- Ruby Land - A well maintained Ruby/Rails aggregator that contains news, opinions, tutorials, and more.
- Ruby Weekly - A free, once–weekly e-mail round-up of Ruby news and articles.

Programming Languages

Ruby 561 C 18 JavaScript 7 Shell 6 C++ 5 Jupyter Notebook 1 Rust 1 HTML 1 go 1 SCSS 1

Ecosyste.ms: Awesome

awesome-ruby

Abstraction

Admin Interface

Analytics

API Builder and Discovery

Assets

Authentication and OAuth

Authorization

Automation

Caching

Captchas and anti-spam

CLI Builder

CLI Utilities

Cloud

CMS

Code Analysis and Metrics

Code Formatting

Code Highlighting

Code Loaders

Coding Style Guides

Concurrency and Parallelism

Configuration

Core Extensions

Country Data

CRM

Cryptocurrencies and Blockchains

Dashboards

Data Visualization

Database Drivers

Database Tools

Date and Time Processing

Debugging Tools

Decorators

DevOps Tools

Diff

Documentation

E-Commerce and Payments

Ebook

Email

Encryption

Environment Management

Error Handling

Feature Flippers and A/B Testing

File Upload

File System Listener

Form Builder

Game Development

Gem Generators

Geolocation

Git Tools

GraphQL

GUI

HTML/XML Parsing

HTTP Clients and tools

Image Processing

Implementations/Compilers

Internationalization

IRB

Logging

Machine Learning

Markdown Processors

Measurements

Mobile Development

Money

Music and Sound

Natural Language Processing

Navigation

Networking

Optimizations

ORM/ODM

ORM/ODM Extensions

Package Management

Pagination

PDF

Performance Monitoring

Presentation Programs

Process Management and Monitoring

Processes

Profiler and Optimization