Ruby on Rails

Flexible authentication solution for Rails with Warden.

Acceptance test framework for web applications

A library for setting up Ruby objects as test data.

help to kill N+1 queries and unused eager loading

A Rails form builder plugin with semantically rich and accessible markup.

Manage your Ruby application's gem dependencies

Database based asynchronous priority queue system -- Extracted from Shopify

A Ruby interface to the Twitter API.

Emoji images and names.

Repository for collecting Locale data for Ruby on Rails I18n as well as other interesting, Rails related I18n stuff

The Official Ruby Object Mapper for MongoDB

Strategies for cleaning databases in Ruby. Can be used to ensure a clean state for testing.

A taggable image board written in Rails.

A very fast & simple Ruby web server

A Relational Algebra

A Ruby library that encodes QR Codes

Ruby One Time Password library

Date and time validation plugin for ActiveModel and Rails. Supports multiple ORMs and allows custom date/time formats.

Connects business objects and REST web services

Visual email testing

A mocking and stubbing library for Ruby

NOT MAINTAINED

Rails Generators for Cucumber with special support for Capybara and DatabaseCleaner

Composite Primary Keys support for Active Record

Internationalization (i18n) library for Ruby

The IRC Bot Building Framework

The facebooker Rails plugin

Ruby on Rails TextMate bundle [Learn it with PeepCode - http://peepcode.com/products/textmate-for-rails-2]

Extracts machine-readable metadata and content from Web pages