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

Any git object lookup

Ruby gem and command line tool for Amazon's Route 53 service.

A modern, simple and very fast Mysql library for Ruby - binding to libmysql

Eventmachine powered Campfire API

Flash messages for Rack applications implemented as middleware.

A library that makes building command-line apps in ruby so easy, you'll feel like an expert is guiding you through it

Ruby driver for MongoDB

ruby bindings to libgit2

Classy web-development dressed in a DSL (official / canonical repo)

A flexible logging library for use in Ruby programs based on the design of Java's log4j library.

Chef cookbook to set node's hostname and FQDN.

DataMapper plugin for writing and speccing migrations

An evented http server built on top of eventmachine

BERTREM is a Ruby EventMachine BERT-RPC client and server library.

The Ruby Programming Language

Active Merchant is a simple payment abstraction library used in and sponsored by Shopify. It is written by Tobias Luetke, Cody Fauser, and contributors. The aim of the project is to feel natural to…

Adds support for creating state machines for attributes on any Ruby class

EventMachine: fast, simple event-processing library for Ruby programs

Run a self-healing, auto-scaled and monitored cloud simply, in the clouds, on nearly any hardware, such as EC2, eucalyptus and vmware

Ruby MIME::Types implementation

A Really Ruby Mail Library

Active Utils

DataMapper - Core

Safe operation-local global variables!

Easy management of your Google Groups subscriptions.

Asynchronous HTTP Client (EventMachine + Ruby)

Bunny is a popular synchronous Ruby client for RabbitMQ.

minitest provides a complete suite of testing facilities supporting TDD, BDD, mocking, and benchmarking.

Development repository for generic firewall cookbook