Public MQTT Brokers

Cloud Based Implementation of IoT Using MQTT Brokers

This is a useful article that sums up the various MQTT options.

https://www.opensourceforu.com/2020/10/cloud-based-implementation-of-iot-using-mqtt-brokers/

Public MQTT Brokers

Name	Broker Address	TCP Port	TLS Port	WebSocket Port	Message Retention	Persistent Session	Sign Up Requred	Link
Eclipse	mqtt.eclipse.org	1883	N/A	80, 443	YES	YES	NO	http://iot.eclipse.org/sandbox.html
Mosquitto	test.mosquitto.org	1883	8883, 8884	80	YES	YES	NO	https://test.mosquitto.org/
HiveMQ	broker.hivemq.com	1883	N/A	8000	YES	YES	NO	https://www.hivemq.com/try-out/
Flespi	mqtt.flespi.io	1883	8883	80, 443	YES	YES	YES	https://flespi.com/mqtt-broker
Dioty	mqtt.dioty.co	1883	8883	8080, 8880	YES	YES	YES	http://www.dioty.co/
Fluux	mqtt.fluux.io	1883	8883	N/A	N/A	N/A	NO	https://fluux.io/
EMQX	broker.emqx.io	1883	8883	8083	YES	YES	NO	https://emqx.io/

EMQX Public MQTT 5 Broker

• https://www.emqx.com/en/mqtt/public-mqtt5-broker