RabbitMQ ranks #6 in Messaging & Event Streaming AI search.

RabbitMQ is a mature, open-source message broker originally created in 2007 by Rabbit Technologies Ltd. and now maintained by Broadcom under the VMware Tanzu brand. Written in Erlang on the Open Telecom Platform framework, it is licensed under the Mozilla Public License 2.0 and implements AMQP as its core protocol, extended to MQTT 5.0, STOMP, and WebSockets through a rich plugin architecture. With more than 35,000 production deployments worldwide, it is widely adopted for microservices decoupling, task queuing, IoT telemetry, RPC, and event-driven pub/sub. A free open-source edition is complemented by a commercial VMware Tanzu RabbitMQ tier offering enterprise security (FIPS 140-2), disaster recovery, extended LTS, and 24/7 support from the core engineering team. RabbitMQ competes against Kafka-ecosystem tools on streaming workloads and against NATS for lightweight cloud-native brokering.