HTML5 file upload jQuery plugin
An extension for Radiant CMS to support file uploads modeled as attachments to pages.
Ruby on Rails
A Rails Plugin for multi-country application to determine whether to show a feature
An extension for Radiant CMS that allows you to specify and change the order of child pages within their parent page.
Original from particletree with additions
SQL Server 2000, 2005 and 2008 Adapter For Rails
Makes tests easy on the fingers and the eyes
Reports exceptions to Hoptoad
Fixture replacement for focused and readable tests.
Roo provides an interface to Open Office, Excel, and Google Spreadsheets.
Mocha is a mocking and stubbing library for Ruby
Utilities for natural language search, sorting etc.
The Rails Engines plugin
Nathaniel Brown's datetime toolbocks - his repo appears to have disappeared
An awesome replacement for acts_as_nested_set and better_nested_set.