Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Google Assistant - Get things done with Google Assistant
ioBroker - flexible and modular application for the IoT and Smarthome
Hound - Your code, always in style. Hound comments on style violations in GitHub pull requests, allowing you and your team to better review and maintain a clean codebase.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
Braina - Braina (Brain Artificial) is an intelligent personal assistant software for Windows OS that allows you to interact with your computer using voice commands.