Scalaffinity is a library providing core functionality for any social networking Web site based on ratings and recommendations. In other words, it is a generic collective intelligence library. Examples of such sites are Anobii, Rate Your Music, and Filmaffinity. It is designed to act as an out-of-the-box model for such Web applications. Nevertheless, Scalaffinity is fully customizable, extensible, and scalable. It incorporates lessons learned while reading "Collective Intelligence in Action" by Satnam Alag.
Trumpeter is a stand-alone server that integrates RT (Request Tracker) with an XMPP chat server (used by Jabber, Pidgin, Google Talk, etc.). It regularly queries RT, and posts notification messages in chat rooms when new tickets arrive, when they are about to expire, and when they are past their due time. It is quite configurable, making it easy to watch several RT queues simultaneously and post the results to different chat rooms.