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A static analysis security vulnerability scanner for Ruby on Rails applications

A Ruby-based parsing DSL based on parsing expression grammars.

Rails plugin for OAuth

Convergent Replicated Data Types

A rich Ruby modeling layer for Riak, Basho's distributed database

Ruby MIDI DJing/live-coding thing

A sane Google Protocol Buffers library for Ruby

NO LONGER UNDER DEVELOPMENT

The Riak client for Ruby.

The Rails Engines plugin, providing engines features to Rails up to 2.3. I recommend you upgrade to Rails 3.1 when it's available, and use the native engine features it provides!

Grit is a Ruby library for extracting information from a git repository in an object oriented manner - this fork tries to intergrate as much pure-ruby functionality as possible

A scientific conversion library.

UNOFFICIAL: please use http://github.com/ruby/ruby instead.

A small, but powerful tag-based template language for Ruby modeled after the ones used in MovableType and TextPattern. It has tags similar to XML, but can be used to generate any form of plain text…

Woulda been in Shoulda, but ain't.

semipersistent debugging tool

Method object extensions for better code navigation

git hook to manage lighthouse tickets

CRDTs for Ruby and eventually Riak

Tiny implmentation of ORM on top of Arel

add atomPub server capabilities to you rails application

Ruby Pong using Gosu

Carpark adds LISP-style car, cdr, and endless combinations of them to the standard Ruby Array, allowing for terse and powerful decomposition of deeply nested arrays: [1, [2, 3, [4, 5], [[[6]]]]].ca…

A small, but powerful tag-based template language for Ruby modeled after the ones used in MovableType and TextPattern. It has tags similar to XML, but can be used to generate any form of plain text…

Versioned YAML database

Simple Affine Cipher for Ruby

Friendly tinyurl-style slugs for your activerecord and datamapper objects

The alpha and omega of rollin' dice