Sesame Database Manager - Lantica Software, LLC - Sesame, A Q&A-compatible Database Manager.
Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
XtraBuild Designer - XtraBuild offers software development tools for database and reporting applications. No coding!
ioBroker - flexible and modular application for the IoT and Smarthome
Sheep - Membership and events for SMEs and nonprofits
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation