Google Home - Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Facebook Portal - Smart, hands-free calling, with Alexa built in
ioBroker - flexible and modular application for the IoT and Smarthome
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
Calaos - Open source home automation