The GPS service daemon: it reads the NMEA 0183 / UBX stream from a GNSS receiver on a serial or USB port, parses it, and re-serves the solved position/velocity/time to clients over a simple TCP/JSON protocol — with gpsmon and cgps for live terminal display of the fix, satellites and raw sentences. The standard way to consume a real GPS receiver on Linux/BSD and the normal 'see what the receiver reports' tool. Hosted on GitLab/Savannah, not GitHub.