RabbitMQ is open source message broker software that implements the Advanced Message Queuing Protocol (AMQP), the open standard for business messaging. Written in Erlang, the RabbitMQ server is based on a proven platform and offers a reliable, highly available, scalable and portable messaging system with predictable and consistent throughput and latency.
RabbitMQ is 100% open source and 100% based on open standard protocols freeing users from dependency on proprietary vendor-supplied libraries. It is designed from the ground up to interoperate with other message systems. It is a leading implementation of AMQP.
Through adapters, it supports MQTT and STOMP, both natively and over HTTP/WebSockets. SMTP is also available thanks to a community plugin. Support for the software is offered through both a thriving community of active contributors and a range of commercial support services available through Pivotal (https://pivotal.io/oss).