OBS Studio - Free and open source software for video recording and live streaming for Mac, Windows and Linux.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Lightstream - Powerful, cloud-based live streaming studio.
ioBroker - flexible and modular application for the IoT and Smarthome
XSplit - Live stream and record your content with ease & share it to streaming services like Twitch, YouTube, Facebook, Mixer, etc. Start your broadcast today.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation