Home-Assistant.io - Home Assistant is an open-source home automation platform running on Python 3.
MetaMask.io - A crypto wallet & gateway to blockchain apps
ioBroker - flexible and modular application for the IoT and Smarthome
Coinbase - Bitcoin, safe and easy.
openHAB - "empowering the smart home" - vendor and technology agnostic open source home automation
OctoFi - DeFi dashboard for decentralized finance tentacles