Classier solution for file uploads for Rails, Sinatra and other Ruby web frameworks
I18n ActiveRecord backend
General ruby templating with json, bson, xml, plist and msgpack support
Tolk is a web interface for doing i18n translations packaged as an engine for Rails 2.3 applications
Open source rich text editor based on HTML5 and the progressive-enhancement approach. Uses a sophisticated security concept and aims to generate fully valid HTML5 markup by preventing unmaintainable tag soups and inline styles.