Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
PINGTAG - The emergency contact QR tags for your car and personal items
ioBroker - flexible and modular application for the IoT and Smarthome
SeQR Contact - Keep your privacy secure and ensure your property stays out of the lost and found with SeQR Contact labels, tags, and stickers
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
The O - Never lose anything again