Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Google Home - Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.
ioBroker - flexible and modular application for the IoT and Smarthome
Sonos One - A self-contained, Alexa-connected speaker from Sonos
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
SYMFONISK - A new speaker lamp by Sonos and IKEA