Stasis is persistence (ORM) framework written in Java. It supports arbitrary relational databases, project-specific profiles with rules for Java-to-DB mapping, persistent-events handling or filtering expressions.
A web-based repository for UIMA-compliant information analysis components, with a web-based interface for humans and a plugin interface for IDEs. More information is available at this project's website.
ICEclipse is an opensource plugin under licence EPL (http://www.eclipse.org/legal/epl-v10.html).
This plugin will help developer of projects (Java, C++, C#, etc ...) using distributed objects via the ICE middle-ware (http://www.zeroc.com).
A framework for Java Remote Method Invocation (RMI) with plugin architecture for both protocol implementation (XMLRPC, etc) and network transport (HTTP, SMTP, etc.)
OpenORM is an OpenSource Object Relational mapping broker based on Scott Ambler whitepapers.
It's developed on C++ and the objects that it persist are CORBA objects.
We are currently using omniORB2 as our ORB and PostgreSQL as our database server.