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EMQX vs RabbitMQ: catalog facts
EMQX	RabbitMQ
Best for: Engineers running large MQTT deployments for IoT or connected vehicles	Best for: Developers connecting services through a self-hosted message queue
Free + paid options A free start is offered; enterprise licences and managed plans are paid.	Free Free under MPL 2.0; Broadcom sells a commercial edition with support.
Linux, Self-hosted	Windows, macOS, Linux, Self-hosted
Full MQTT 5.0 support plus MQTT over QUIC Masterless clustering for high availability All 4 strengths for EMQX Full MQTT 5.0 support plus MQTT over QUIC Masterless clustering for high availability Gateways for CoAP, LwM2M and MQTT-SN Built-in data integrations	Supports AMQP 1.0 and MQTT 5.0 Both queues and streams in one broker All 4 strengths for RabbitMQ Supports AMQP 1.0 and MQTT 5.0 Both queues and streams in one broker Runs locally, on-premises or in the cloud Client libraries for many languages
Business Source License, not open source since 5.9.0 Aimed at large deployments rather than small home setups	Running a cluster in production takes operational knowledge Extended support and some features are in the paid Tanzu edition
Self-hosted, Hosted service	Downloadable app, Self-hosted
Not open source	Open source
License: BSL-1.1	License: MPL-2.0
Not stated if an account is needed	No account needed
Not stated if it works offline	Offline features available
Official website Full listing and sources Sources for EMQX emqx.com github.com/emqx/emqx Catalog checked October 2, 2026	Official website Full listing and sources Sources for RabbitMQ rabbitmq.com Catalog checked October 1, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.