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Free Public MQTT Broker Online

TAG mqtt

EMQX Public MQTT Broker

Protocol Server Port MQTT Version Note
TCP broker.emqx.io 1883 5.0/3.1.1 You can subscribe to testtopic/# topics
TCP/TLS broker.emqx.io 8883 5.0/3.1.1 You can subscribe to testtopic/# topics
Websocket broker.emqx.io 8083 5.0/3.1.1 You can subscribe to testtopic/# topics
Websocket/TLS broker.emqx.io 8084 5.0/3.1.1 You can subscribe to testtopic/# topics

Mosquitto Public MQTT Broker

Protocol Server Port MQTT Version Note
TCP test.mosquitto.org 1883 5.0/3.1.1 unencrypted, unauthenticated
TCP test.mosquitto.org 1884 5.0/3.1.1 unencrypted, authenticated
TCP/TLS test.mosquitto.org 8883 5.0/3.1.1 encrypted, unauthenticated
TCP/TLS test.mosquitto.org 8884 5.0/3.1.1 encrypted, client certificate required
TCP/TLS test.mosquitto.org 8885 5.0/3.1.1 encrypted, authenticated
TCP/TLS test.mosquitto.org 8886 5.0/3.1.1 encrypted, unauthenticated
TCP/TLS test.mosquitto.org 8887 5.0/3.1.1 encrypted, server certificate deliberately expired
Websocket test.mosquitto.org 8080 5.0/3.1.1 unencrypted, unauthenticated
Websocket/TLS test.mosquitto.org 8081 5.0/3.1.1 encrypted, unauthenticated
Websocket test.mosquitto.org 8090 5.0/3.1.1 unencrypted, authenticated
Websocket/TLS test.mosquitto.org 8091 5.0/3.1.1 encrypted, authenticated
Free Public MQTT Broker Online-summary

The public free mqtt broker online supports mqtt, mqtts, ws, wss and other protocol access, and supports mqtt 3.1.1 and 5.0 standards.

Free Public MQTT Broker Online-instructions

The online free mqtt broker lists the public free mqtt servers that can be used to learn and test the mqtt protocol. Mqtt is a client server based message publish / subscribe transport protocol. Mqtt protocol is lightweight, simple, open and easy to implement. These characteristics make it widely applicable, It is widely used in Internet of things scenarios.

  1. EMQX Reference documents
  2. Mosquitto Reference documents