Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
BuildMyPC - Custom PC part picker tool to build your PC
ioBroker - flexible and modular application for the IoT and Smarthome
PC Builder - Custom PC part picker tool to build your PC
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
AquaSnap - Too many windows on your screen? Stop wasting your productivity.