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Eclipse Mosquitto vs EMQX: catalog facts
Eclipse Mosquitto	EMQX
Best for: Home automation and IoT setups that need a self-hosted MQTT broker	Best for: Engineers running large MQTT deployments for IoT or connected vehicles
Free Free and open source under the EPL/EDL licences.	Free + paid options A free start is offered; enterprise licences and managed plans are paid.
Windows, Linux, Self-hosted, Command line	Linux, Self-hosted
Supports MQTT 5.0, 3.1.1 and 3.1 Light enough for single-board computers All 4 strengths for Eclipse Mosquitto Supports MQTT 5.0, 3.1.1 and 3.1 Light enough for single-board computers Includes mosquitto_pub and mosquitto_sub command-line clients Ships a C client library	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
A broker only, with no graphical interface for managing messages Requires familiarity with MQTT and broker configuration	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: EPL/EDL	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 Eclipse Mosquitto mosquitto.org Catalog checked October 2, 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.