| Server | Broker | Port | W/S | TLS |
| iot.eclipse.org | Mosquitto | 1883 8883 | n/a | n/a |
| hivemq.com | HiveMQ | 1883 | 8000 | n/a |
| mosquitto.org | Mosquitto | 1883 8883 8884 | 8080 8081 | n/a |
| mosca | 1883 | 80 | n/a | |
| HiveMQ | 1883 | n/a | ||
| flespi | 1883 | n/a | ||
| mosquitto | 1883 | n/a | ||
| mqtt.fluux.io | 1883 | 8883 | ||
| dev.rightech.io | 1883 | 8883 |
MQTT websocket-client