AASM - State machines for Ruby classes
acts_as_audited is an ActiveRecord extension that logs all changes to your models in an audits table.
Treat an ActiveRecord model as a file attachment, storing its patch, size, content type, etc.
Engine Yard specific capistrano recipes
Facebook-style lightbox, built in jQuery
A Rails Plugin for adding a simple health check to your application
jQuery plugin to paginate an HTML form
PostageApp Rails Plugin for efficiently sending email
Rails frontend for PowerDNS running MySQL or PostgreSQL backends
PL/pgSQL function to get the ocurrences of a recurring event
Redmine is a flexible project management web application written using Ruby on Rails framework. http://github.com/edavis10/redmine is the official git mirror of the svn repository
Adaptive pagination plugin for web frameworks and other applications