Sidecook - Airbnb for personal chefs
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Tasted - Your voice-enabled cooking companion
ioBroker - flexible and modular application for the IoT and Smarthome
BotSoft - Facebook Messenger chatbot that presents restaurant's menu
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation