Betwixt Component Page
Betwixt is an xml-object mapping component devised (originally) by James Strachan. It lives in Jakarta-Commons.
Contribute To The Betwixt Design!
It's only in alpha but already people are demanding that the design be improved. This refactoring should make the design easier to understand - and so make it easier for people to contribute. (And yes, it'll hopefully make the life of the existing committers that much easier as well 