Open Source Ruby Clone Scripts

Gitlab
Self Hosted Git Management. Fast, secure and stable solution based on Ruby on Rails & Gitolite. Distributed under the MIT License. New release every month.
Gitorious
Gitorious aims to provide a great way of doing distributed opensource code collaboration. It also powers this site.
Fortysquires
This is an HTML5 web based version of foursquare, called fortysquires. It's open source, so you can see exactly how it works. It's an example of: * HTML 5 * Mobile features * Rails 3 * Selling a web app via AppStoreHQ