YouAtNotes has created a great framework for self-registration and simple profile management for extranet servers.
Lotus Domino lacks a self-registration application for a while. Julian and his team created this solid application and developed a multilingual fancy interface with XPages.
Although the application is not readily deployable, after a couple hours work, it may be used for almost all environments. We have used this application for Lotus User Group site with lots of modifications.
Documentation is very well, the code is easy and the framework is very consistent. Thanks...