Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Storylane.io - Storylane helps companies build and share interactive product demos with their prospects in 10 mins. Guided experiences can be built code-less and helps convert customers faster.
ioBroker - flexible and modular application for the IoT and Smarthome
Arcade - Create effortlessly beautiful demos -- in minutes.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
Demostack - The no-code product demo experience platform