Datadog - See metrics from all of your apps, tools & services in one place with Datadog's cloud monitoring as a service solution. Try it for free.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
AppDynamics - Get real-time insight from your apps using Application Performance Management—how they’re being used, how they’re performing, where they need help.
ioBroker - flexible and modular application for the IoT and Smarthome
Zabbix - Track, record, alert and visualize performance and availability of IT resources
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation