OpenXava is an XML/Java Framework for rapidly and easily developing J2EE business applications. It is based on business components defined with XML. It is feature rich and flexible, since it has been used for years to create real business applications.
Collection behavior was greatly improved. Look and feel integration for Liferay and WebSphere Portal 6 was improved. Transient components and default mapping for persistent components were added. More than 80 features and fixes were made since version 2.1.