Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Mistbox - Save 30% on your air conditioning bill
ioBroker - flexible and modular application for the IoT and Smarthome
Zen Thermostat - Control the temperature of your home anytime, from anywhere
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
LOOFT- A/C Redefined - Comfort Automated