Apache Qpid™ makes messaging tools that speak AMQP and support many languages and platforms.
AMQP is an open internet protocol for reliably sending and receiving messages. It makes it possible for everyone to build a diverse, coherent messaging ecosystem.
More about Qpid and AMQP.
Qpid Proton is a toolkit allowing any application to speak AMQP.
Apache Qpid, Messaging built on AMQP; Copyright © 2013 The Apache Software Foundation; Licensed under the Apache License, Version 2.0; Apache Qpid, Qpid, Qpid Proton, Proton, Apache, the Apache feather logo, and the Apache Qpid project logo are trademarks of The Apache Software Foundation; All other marks mentioned may be trademarks or registered trademarks of their respective owners