Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Arcade - Create effortlessly beautiful demos -- in minutes.
ioBroker - flexible and modular application for the IoT and Smarthome
EseeCloud - EseeCloud is a powerful mobile video surveillance app that lets you keep an eye on your property from anywhere in the world.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
Navattic - Create shareable product demos