write snippet code to rewrite your project code

A simple mutation testing apparatus

Check data integrity for your ActiveRecord models

Update your gems conservatively to deal with vulnerable gems or just get more current.

Discover dead view files in your app. Track view layer render usage

A standalone simple web app and database

Queries a PostgreSQL database and publishes statistics to Ganglia using gmetric.

Pario is a Gosu game framework that helps to give you structure and a start for creating games.

Capistrano Handbook for All

Remote multi-server automation tool

Text classifier in Ruby that uses Hadoop/HBase, Mongo, or Cassandra for storage. DEPRECATED, use https://github.com/bmuller/ankusa

Easing the building of vagrant boxes

Static analysis and style linter for Ruby code.

...at your service

Plugin to run checks on your Rails 2.x/3.x to check for obvious upgrade points on the path to 3.0

awesome gem hosting.

RubyGems.org/RubyForge OAuth Provider

A non instrusive gem which helps you browse, search and manage your data using browser

Capistrano Handbook for All

A deployment automation tool built on Ruby, Rake, and SSH.

Watir for Safari

The Ruby community's gem hosting service.

A fast and robust web server and application server for Ruby, Python and Node.js