YAHAC brings Home Assistant to your desktop system tray. Monitor sensors in real-time, toggle switches with one click, and integrate your computer as a Home Assistant entity via MQTT. Native packages for Linux (Debian/Ubuntu/Arch) with portable binaries available.

Open-source tool for validating VAT numbers using official BZSt, VIES, and HMRC APIs. Features GUI and CLI for batch processing CSV/XLSX/JSON files.