Spree is a complete open source e-commerce solution built with Ruby on Rails.

RailsAdmin is a Rails 3 engine that provides an easy-to-use interface for managing your data.

A Ruby interface to the Twitter API.

Open source e-commerce for Ruby/Rails.

The Ruby on Rails application that powers the OpenStreetMap website and map editing API. Used by tens of thousands of contributors mapping the world.

CocoaPods manages library dependencies for your Xcode project.

Automated dependency updates

A time banking system

Connect suppliers, distributors and consumers for the sale and purchase of local produce

The missing package manager for Chrome OS

AASM - State machines for Ruby classes (plain Ruby, Rails Active Record, Mongoid)

Classy web-development dressed in a DSL

A distributed build system for the open source community.

Alchemy is a powerful, userfriendly and flexible Open Source Rails CMS.

Language Savant. Recognize the language of files on github.com.

A privacy aware, distributed, open source social network

Solidus, Rails eCommerce System

Server automation framework and application

The Ruby on Rails framework

Sinatra is a DSL for quickly creating web applications in Ruby with minimal effort.