Apache Qpid

Apache Qpid is an open-source messaging system which implements the Advanced Message Queuing Protocol (AMQP). It provides transaction management, queuing, distribution, security, management, clustering, federation and heterogeneous multi-platform support. The Apache Qpid API supports multiple programming languages and comes with both C++ (for Perl, Python, Ruby, .NET etc.) and Java (JMS API) brokers.
History.
In 2005 JPMorgan Chase approached other firms to form a working group that included Cisco Systems, IONA Technologies, iMatix, Red Hat, and Transaction Workflow Innovation Standards Team (TWIST). In the same year JPMorgan Chase partnered with Red Hat to create Apache Qpid, initially in Java and soon after C++.
List of components.
Apache Qpid consists of a set of messaging APIs, servers and tools.