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RabbitMQ vs EMQX: catalog facts
RabbitMQ	EMQX
Best for: Developers connecting services through a self-hosted message queue	Best for: Engineers running large MQTT deployments for IoT or connected vehicles
Free Free under MPL 2.0; Broadcom sells a commercial edition with support.	Free + paid options A free start is offered; enterprise licences and managed plans are paid.
Windows, macOS, Linux, Self-hosted	Linux, Self-hosted
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	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
Running a cluster in production takes operational knowledge Extended support and some features are in the paid Tanzu edition	Business Source License, not open source since 5.9.0 Aimed at large deployments rather than small home setups
Downloadable app, Self-hosted	Self-hosted, Hosted service
Open source	Not open source
License: MPL-2.0	License: BSL-1.1
No account needed	Not stated if an account is needed
Offline features available	Not stated if it works offline
Official website Full listing and sources Sources for RabbitMQ rabbitmq.com Catalog checked October 1, 2026	Official website Full listing and sources Sources for EMQX emqx.com github.com/emqx/emqx Catalog checked October 2, 2026

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