Acceptance test framework for web applications

Resque is a Redis-backed Ruby library for creating background jobs, placing them on multiple queues, and processing them later.

OmniAuth is a flexible authentication system utilizing Rack middleware.

Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.

A modular Ruby web server interface.

Manage your Ruby application's gem dependencies

The Ruby cloud services library.

A Really Ruby Mail Library

Token based authentication for Rails JSON APIs. Designed to work with jToker and ng-token-auth.

Debugging in Ruby

High performance memcached client for Ruby

Ruby's bikeshed-proof linter and formatter 🚲

Attach comments to ActiveRecord's SQL queries

Oauth2 strategy for Google

Heroku CLI

Collection of RSpec/MiniTest matchers and Cucumber steps for testing email in a ruby app using ActionMailer or Pony

Simple, efficient worker queue for Ruby & PostgreSQL.

Industrial Strength Asset Packaging for Rails

A fake filesystem. Use it in your tests.

Automatically restart Unicorn workers based on 1) max number of requests and 2) max memory

Pretty documentation generator for Github projects with proper Readme.

Yet another role-based authorization system for Rails

Fancy CSS Buttons using Compass

Rails/ActiveRecord support for distributed multi-tenant databases like Postgres+Citus

Provides an irb session to a running ruby process.

self assembling fabric of ruby daemons

A RESTful CouchDB client based on Heroku's RestClient and Couch.js - you want the version at http://github.com/couchrest/couchrest

Small ERB Implementation

A configurable and documented Rails view helper for adding gravatars into your Rails application