Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
KreateCube - KreateCube is an online platform, helps you find the nearest architects, interior designers, and firms to plan, design, and build your project within your budget. If you are professionals, explore business leads as per your locations.
ioBroker - flexible and modular application for the IoT and Smarthome
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
Home - Securely control all your HomeKit accessories from your favorite iOS device.
Domoticz - Domoticz is a lightweight Home Automation System