Google Home - Set up, manage, and control your Chromecast, Chromecast Audio and Google Home devices.
Stampd - A document blockchain stamping service
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
iotlist - Discover the internet of things
ioBroker - flexible and modular application for the IoT and Smarthome
The IoT List - A directory of all the best IoT resources and products.