Tiny and easy to use JDBC framework, simplifies usage of JDBC driver
A simple JDBC framework (JAR) by Jeff Smith. Employs database independent, unchecked exception code. Supports Oracle, mySQL, HSQL, and PostgreSQL--can be easily extended to new databases. See article (originally published on Developer.com ) here: http://softtechdesign.com/products/SQLExecutor/SQLExecutor.htm
db4o is the world's leading open source object database for Java and .NET. Leverage fast native object persistence, ACID transactions, query-by-example, S.O.D.A object query API, automatic class schema evolution, small size (http://developer.db4o.com)
XUI is a Java and XML RIA platform for building smart app's. Swing, AWT and other widget sets can be used on a range of hardware. XUI's modular framework can help many aspects of application development. NetBeans and Eclipse are available.