Dovetail is a development toolkit for building database-backed web sites in Java. It is specifically designed to address some serious problems which arise in building a reliable, testable website with server-side Java and a relational database.
Dovetail is a member of the IronWorks.cc family of projects.
Dovetail powers the programming contests website Agonism.com. If you want to do a little Java coding just for fun, check it out.
Dovetail is distributed under the LGPL license, which you can always find on the GNU website.
For further information and documentation, see:
See the Todo list for other tasks, besides documentation, that are in the queue.
If you are interested in using or contributing to Dovetail, let me know.