We unleash a networking monitoring tool to spot new devices, track changes in real time, and fire alerts straight into Home Assistant, MQTT, and your phone.
NetAlert X — Network intruder and presence detector. Scans for devices connected to your network and alerts you if new and unknown devices are found.
Home Assistant - NetAlertX Docs — NetAlertX comes with MQTT support, allowing you to show all detected devices as devices in Home Assistant. It also supplies a collection of stats, such as number of online devices.