Intercom - Intercom is a customer relationship management and messaging tool for web businesses. Build relationships with users to create loyal customers.

Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.

Landbot - An intuitive no-code conversational apps builder that combines the benefits of conversational interface with rich UI elements.

ioBroker - flexible and modular application for the IoT and Smarthome

Botsify - Ever wonder if you could replace your live chat support system with a chatbot?. Its possible now with Botsify Chatbot For Website.

openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation