[petre]

EMQX has several auth modules. We use the Mnesia auth module with HTTP API client id provisioning. They also have NanoMQ, a MQTT broker for IoT edge (on resource constrained devices). The documentation is also quite decent compared to this.

https://www.emqx.io/docs/en/latest/access-control/authn/auth...

They have a community edition available as a docker image or packages for popular Linux distros.

https://www.emqx.com/en/try?product=broker

[dlandiak]

We aim to be no worse than Emqx in this regard :) Planning to add auth modules support in the near future.