Kano - The educational computer and coding kit for all ages
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Harry Potter Kano Coding Kit - Build a wand. Learn to code. Make magic.
ioBroker - flexible and modular application for the IoT and Smarthome
Bitsbox - Monthly code projects for kids
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation