MQTT server support-Feature comparison of different MQTT brokers

This page attempts to document the features that various MQTT servers (brokers) support. This is specific to their MQTT support; many of these servers have much wider capabilities beyond just MQTT.

https://github.com/mqtt/mqtt.github.io/wiki/server-support  --> Outdated

https://drive.google.com/file/d/11DNloXDtubIAIU156tEv9hipN5apS0rs/view?usp=sharing