The Apache DB Project - Project charged with the creation and maintenance of commercial-quality, open-source, database solutions. Mailing list signup, guidelines, repositories, and proposals.
CrossDB - An open source Java API for writing object oriented SQL statements that will run on any database. [Open source]
Java Database Tools, Products and Resources - Includes list of utilities for OO, OR and relational database application development in Java.
PolePosition - An open source Java database benchmark framework and results. [Open source, GPL]
