gpsd: gpsd (GPS service daemon) gpsd: gpsd: gpsd is a service daemon that mediates access to a GPS sensor connected gpsd: to the host computer by serial or USB interface, making its data on the gpsd: location/course/velocity of the sensor available to be queried on TCP gpsd: port 2947 of the host computer. With gpsd, multiple GPS client gpsd: applications (such as navigational and wardriving software) can share gpsd: access to a GPS without contention or loss of data. Also, gpsd responds gpsd: to queries with a format that is substantially easier to parse than NMEA gpsd: 0183. A client library is provided for applications. gpsd: