Various MQTT Server features

His page attempts to document the features, various MQTT servers (brokers) support. This was specific to their MQTT support; Many of these servers have much wider capabilities beyond just MQTT.

Capabilities

Server	QoS 0	QoS 1	QoS 2	Auth	Bridge	$SYS	SSL	Dynamic Topics	Cluster	WebSockets	Plugin System
2lemetry	?	?	?	?	?	§	?	?	?	?	?
Apache ActiveMQ	?	?	?	?	?	?	?	?	?	?	?
Apache ActiveMQ Artemis	?	?	?	?	?	?	?	?	?	?	?
Bevywise IoT Platform	?	?	?	?	Rm	?	?	?	?	?	Rm
Emitter	?	§	?	?	?	?	?	?	?	?	?
Emqttd	?	?	?	?	?	?	?	?	?	?	?
Flespi	?	?	?	?	?	?	?	?	?	?	?
Gnatmq	?	?	?	?	?	?	?	?	?	?	?
Hbmqtt	?	?	?	?	?	?	?	?	?	?	?
Hivemq	?	?	?	?	?	?	?	?	?	?	?
IBM Messagesight	?	?	?	?	?	?	?	?	§	?	?
Jorammq	?	?	?	?	?	?	?	?	?	?	?
Mongoose	?	?	?	?	?	?	?	?	?	?	?
Moquette	?	?	?	?	?	?	?	?	Rm	?	?
Mosca	?	?	?	?	?	?	?	?	?	?	?
Mosquitto	?	?	?	?	?	?	?	?	§	?	?
Mqtt.js	?	?	?	§	?	?	?	?	?	?	?
Mqttwk	?	?	?	?	?	?	?	?	?	?	?
RabbitMQ	?	?	?	?	?	?	?	?	?	?	?
Rsmb	?	?	?	?	?	?	?	?	?	?	?
Software AG Universal Messaging	?	?	?	?	?	?	?	?	?	Rm	?
Solace	?	?	?	?	§	?	?	?	?	?	?
Swiftmq	?	?	?	?	?	?	?	?	?	?	?
Trafero tstack	?	?	?	?	?	?	?	?	?	?	?
Vernemq	?	?	?	?	?	?	?	?	?	?	?
WebSphere MQ	?	?	?	?	?	?	?	?	?	?	?

Key:? Supported? Not supported? Unknown§see Limitations RM Roadmap (planned)

Limitations

• Mqtt.js would accept connections with username and password supplied, but does not actually authenticate the connection

• IBM Messagesight supports a high-availability mode which provides the redundancy advantage of a cluster, but does not supp Ort any sort of the load balancing for MQTT.

• 2lemetry uses domains, where the first topic segment is the domain name. The $SYS topic space is under the domain (i.e. com.example/$SYS/# )

• Solace does provide a proprietary bridge solution between brokers.

• Mosquitto clustering is achieved on backend level (Redis, AMQP, etc).

• Software AG Universal Messaging provides active/active clustering (over a proprietary protocol) and bridging (over a PROPR Ietary protocol).

Potentially should add columns to TRACK:LWT; Additional Protocols (WMQ, AMQP, Mqtts etc)

This is in need of expanding. Please add known information for known brokers to this table and include any known limitations below it.

Https://github.com/mqtt/mqtt.github.io/wiki/server-support

Various MQTT Server features