Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Whisper.sh - Whisper is the best place to express yourself online. Connect with likeminded individuals and discover the unseen world around you.
ioBroker - flexible and modular application for the IoT and Smarthome
Stupid Chat - World's newest Anonymous Social Network
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
Sarahah - Sarahah is a Social Networking Application for providing anonymous feedback launched in 2016 and available to use on iOS and Android platforms.