FHEM - FHEM (TM) is a GPL'd perl server for house automation.
OpenELEC - OpenELEC, which stands for Open Embedded Linux Entertainment Center, is a Linux operating system that makes the host computer a Kodi media center. The software was the winner of the Swiss Opensource Award in 2014.
Conrad Connect - Service for managing smart home devices
LibreELEC - LibreELEC is ‘Just enough OS’ for Kodi, a Linux distribution built to run Kodi on current and...
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
LinHES - ChiliProject