collectiveidea

Audited (formerly acts_as_audited) is an ORM extension that logs all changes to your Rails models.

An awesome replacement for acts_as_nested_set and better_nested_set.

A gem for merging Active Record models

A Rails plugin for playing around with HTML5.

A respond_to style helper for doing different actions based on which request parameters are passed.

A Rails plugin that allows quick and easy fetching of random records, or records in random order.

A sweet Ruby measurement & converstion Library.

Tracking political yard signs.

A Rails plugin that disables all CSS on CSS Naked Day

Some helpers for using trees in Rails

Example Rails application for Ruby on Rails training used by Collective Idea and Idea Foundry (http://ideafoundry.info/ruby-on-rails). Note: we often use interactive rebases, so commit dates may not make sense.