RabbitMQ is an open-source message-broker software (sometimes called message-oriented middleware) that originally implemented the Advanced Message Queuing Protocol (AMQP) and has since been extended with a plug-in architecture to support Streaming Text Oriented Messaging Protocol (STOMP), MQ Telemetry Transport (MQTT), and other protocols.

[1] Written in Erlang, the RabbitMQ server is built on the Open Telecom Platform framework for clustering and failover.

Client libraries to interface with the broker are available for all major programming languages.

Originally developed by Rabbit Technologies Ltd. which started as a joint venture between LShift and CohesiveFT in 2007,[4] RabbitMQ was acquired in April 2010 by SpringSource, a division of VMware.

[7] The project consists of: This section gives sample programs written in Python (using the pika package) for sending and receiving messages using a queue.