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docs/prerequisites/controller.md

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+# Controller
+MQTT enables you to connect easily a controller so as to monitor, control and automate scenarios.
+
+The following controllers (and many other software) are compatible with MQTT:
+
+![controllers](../img/OpenMQTTGateway_controllers.png)
+
+OpenMQTTGateway is independant from these projets, you have the liberty of choice among all the compatibles software.
+
+* [OpenHAB2](https://www.openhab.org)
+* [Home Assistant](https://www.home-assistant.io)
+* [Domoticz](https://www.domoticz.com)
+* [Jeedom](https://www.jeedom.com)
+* [Node Red](https://nodered.org)
+* [FHEM](https://fhem.de)