RabbitMQ

RabbitMQ is an implementation of AMQP, the emerging standard for high performance enterprise messaging. Features-A complete, conformant and interoperable implementation of the published AMQP specification -Based on a proven platform, offering exceptionally high reliability, availability and scalability -Good throughput and latency performance that is predictable and consistent -Compact, easily maintainable code base, for rapid customisation and hot deployment -Extensive facilities for management, monitoring, control and debugging -Licensed under the open source Mozilla Public License