Qpid implementations of the Advanced Messaged Queuing Protocol (AMQP)

Qpid provides multiple language implementations of the Advanced Messaged Queuing Protocol (AMQP) specification and related technologies including PGM, transaction management, queuing, distribution, security, management and heterogeneous multi-platform support for messaging. Qpid's overall goal is to create an open and interoperable implementation for messaging which implements the AMQP specification. Currently there is a Java and C++ broker with clients in C++, Java (JMS), Ruby, Pyhton and C# coming.http://incubator.apache.org/qpid/index.html