REWO - REWO is a knowledge documentation and distribution solution, which drastically improves capturing, visualizing and communicating knowledge.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
ClassVR - VR Training Simulator
ioBroker - flexible and modular application for the IoT and Smarthome
Mursion - Mursion is paving the way for more effective training and learning solutions through immersive virtual reality environments with customized software.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation