Moodnotes - Capture your mood and improve your thinking habits
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
H2O-Pal - Create a healthy habit of drinking water. Fitbit for H2O.
ioBroker - flexible and modular application for the IoT and Smarthome
ProductBio - Automatic sustainability compliance
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation