ioBroker - flexible and modular application for the IoT and Smarthome
Domoticz - Domoticz is a lightweight Home Automation System
IP-Symcon - IP-Symcon is the innovative centre of your entire building automation!
SEQUEmatic - SEQUEmatic lets you build sequences to link together your various smart devices.
Nim Home Assistant (NimHA) - Nim Home Assistant is an open-source home automation platform running on Nim.
Home - Securely control all your HomeKit accessories from your favorite iOS device.