Update 23 April, 2012
I've just taken this project over to try and get it (and keep it!) a bit more up to date, and hopefully also include some example source code, use cases etc. Please bear with me as I do this - and chime in if you'd like to contribute. My main is Nirys on the Laethys server, if you'd like to contact me in game.
June 2011
Providing a comprehensive searchable and easy to read compilation of all information regarding the Rift™ Addon API. This is a community project and as such is free to anyone and everyone.