HornetQ is an open source asynchronous messaging project from JBoss.
In June of 2015 the HornetQ code-base was donated to the Apache ActiveMQ project and it lives on as the Apache ActiveMQ Artemis broker. Migration when possible is strongly recommended to get the latest bug fixes and new features.
HornetQ is an open source project to build a multi-protocol, embeddable, very high performance, clustered, asynchronous messaging system.
HornetQ is an example of Message Oriented Middleware (MoM).
Source is available at https://github.com/hornetq/hornetq.
Developers hang around at channel #hornetq
at IRC server irc.freenode.net
.