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.
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 will accept connections with username and password supplied, but do not actually authenticate the connection
-
IBM MessageSight supports a High-Availability mode which provides the redundancy advantage of a cluster, but does not support any sort of 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 proprietary protocol).
Potentially should add columns to track: LWT; additional protocols (WMQ, AMQP, MQTTs etc)
This is in need of expanding. Please add known information about known brokers to this table and include any known limitations below it.
https://github.com/mqtt/mqtt.github.io/wiki/server-support