A Ruby static compiler.

The Ruby Language Toolkit

Web server for Rails/Rack applications built upon JRuby::Rack and Apache Tomcat

Static analysis Lint-type tool to improve your OO Ruby code

A command-line drum machine. Convert a beat notated in YAML into a *.wav file.

Manage Trello cards through Github commit messages

A friendly regular expression builder for Ruby

Rack for JRuby and Java appservers

Simple, transparent CoffeeScript support for Rails and Rack apps.

Replicate data across your applications

Promises/A+ for Ruby

Online event coordination and survey application

Provide a simple way to create XML markup and data structures.

Development environments made easy

Enumerations for Ruby with some magic powers! 🎩

Compose, decouple and manage domain logic and data persistence separately. Works particularly great for composing form objects!

MemFs provides a fake file system that can be used for tests. Strongly inspired by FakeFS.

a (ridiculously) small and powerful web framework.

Yell - Your Extensible Logging Library

OpenGovernment -- a project of the Participatory Politics Foundation

Praxis is a framework that focuses on both the design and implementation aspects of creating APIs.

The command line address book

Q/A based social network

generate random data from a Regular Expression

a workflow engine

A ruby Image/Graphics Magick library. Note: This project is no longer maintained.

HTML5 Application Assembler

A tiny debugging library for Ruby

A micro LISP implementation in 24 lines of Ruby.

Survey is a Rails Engine that brings quizzes, surveys and contests into your Rails application.