Wikipedia
HornetQ
HornetQ is an open source asynchronous messaging project from JBoss. It is an example of Message Oriented Middleware. HornetQ is an open source project to build a multi-protocol, embeddable, very high performance, clustered, asynchronous messaging system. During much of its development, the HornetQ code base was developed under the name JBoss Messaging 2.0.
The HornetQ project is licensed using the Apache Software License v 2.0. As of 4-2-2010 HornetQ is the SPECjms2007 record breaker.