Free MQTT broker for sensors: a HiveMQ alternative

An MQTT broker only receives messages; you still have to store them, chart them and build alerts. With EzGYM the broker already comes with all that, for free.

Create a free account Free MQTT broker

HiveMQ Cloud and other cloud brokers have free plans for any MQTT use, but they are just that: a broker. To monitor temperature you still need a database, a chart and something that alerts you.

EzGYM is a Mosquitto broker built for temperature and humidity sensors: each sensor has its own username and password, and its readings are kept for 90 days, shown on a chart and trigger email alerts if they go out of range or the sensor stops sending.

It is not a general-purpose broker: each sensor publishes only to its own topic and readings must be temperature or humidity (Shelly, ESPHome or Tasmota). For other MQTT uses, a general broker is a better fit.

How to set it up

  1. 1 Create your free EzGYM account.
  2. 2 Under Sensors, add a sensor with its temperature range.
  3. 3 Enter the server, username and password on the sensor (Shelly, ESPHome or Tasmota).
  4. 4 See the chart and get email alerts.

Frequently asked questions

Is it a real MQTT broker?

Yes, Mosquitto, on port 1883, with a username and password per sensor.

Can I publish any message?

Each sensor publishes to its own topic; EzGYM reads temperature and humidity values. Other messages are ignored.

How many sensors are free?

Up to 30 per account.

More guides

Create a free account