Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
ecobee - The smarter wi-fi thermostat
Google Home - Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.
Netatmo - Control your heating wherever you are
ioBroker - flexible and modular application for the IoT and Smarthome
Nest Thermostat (3rd gen) - A slimmer, sharper, sexier thermostat