Home Assistant

"Home Assistant is an open-source home automation platform running on Python 3. Track and control all devices at home and automate control." - https://home-assistant.io/

"Hass.io turns your Raspberry Pi (or another device) into the ultimate home automation hub powered by Home Assistant. With Hass.io you can focus on integrating your devices and writing automations." - https://home-assistant.io/hassio/