Do we really need Controller and View tests?

CommunityEngine is a free, open-source social network plugin for Ruby on Rails applications. Drop it into your new or existing application, and you’ll instantly have all the features of a basic community site.

Monkeybars is a library that enables you to make use of Swing from JRuby. Monkeybars aims to allow you to continue using the GUI editing tools you are used to but makes it easy to write all your application logic in pure Ruby.

iUI toolkit, which contains a number of CSS styles and JavaScript event handlers to make iPhone Web apps look and feel somewhat like native iPhone applications. As I was working with iUI, I realized I was building up a library, a Rails plugin: rails_iui.

Viewzi is a whole new way to experience search.

irb_callbacks gem. It adds before, after, and around callbacks to the prompt, eval, and output phases of irb.

Visifire is a set of open source data visualization components - powered by Microsoft® Silverlight™. With Visifire you can create and embed visually stunning animated Silverlight Charts within minutes.