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.

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

Open source e-commerce for Ruby/Rails.

CocoaPods manages library dependencies for your Xcode project.

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)

Serializers replace hash-driven development with object-oriented development

Classy web-development dressed in a DSL

A distributed build system for the open source community.

A privacy aware, distributed, open source social network

Project management and code hosting application. Follow us on twitter @gitlabhq

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

Server automation framework and application

The Ruby on Rails framework

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

A command line utility. ColorLS = LS + color + icons

Vagrant is a tool for building and distributing working environments. http://www.vagrantup.com