My Devices - Drag and drop IoT project builder for Raspberry Pi
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
ioBroker - flexible and modular application for the IoT and Smarthome
Nim Home Assistant (NimHA) - Nim Home Assistant is an open-source home automation platform running on Nim.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
Apilio - Automate actions in your smart home with almost any connected device.