ArchitectUI - Modern dashboard template for bootstrap 4
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
Flatlogic - Business Software: AI-Driven Solutions at Speed.
ioBroker - flexible and modular application for the IoT and Smarthome
PlainAdmin - PlainAdmin is an Open-source freemium Bootstrap 5 based vanilla JS multipurpose admin template comes with - all essential dashboard components, pages, UI elements, charts, graphs, libraries and everything you may need for a data-rich backends.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation