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

Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks

A simple ruby authentication solution.

A library for bulk insertion of data into your database using ActiveRecord.

Ruby: 2 CPUs = 2x Testing Speed for RSpec, Test::Unit and Cucumber

Easiest way to add multi-environment yaml settings to Rails, Sinatra, Padrino and other Ruby projects.

An ActiveRecord plugin for managing lists.

Namespaced Rack::Session, Rack::Cache, I18n and cache Redis stores for Ruby web frameworks

A simple universally unique ID generation library.

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

The Swiss Army knife for automated Jasmine specs in your console.

HTTP Caching SASS for your leisure (?)

A Resque plugin that enables complete control over your running Resque Workers, all from the Resque-Web UI

A do-nothing cache store to use under development

Rails 3 compatible soft destroy implementation

Google Webmaster Tools … IN A GEM.