
1) Free software programmed in C
Found on
https://www.crosswordclues.com/clue/gpsdrive

GpsDrive is a computer program designed to act as a vehicle navigation system. The program displays its user`s position, obtained from an NMEA-capable GPS receiver, on a zoomable map drawn on a computer screen. The map file is automatically selected depending on the position and preferred scale. Currently, GpsDrive uses raster images of maps, but....
Found on
http://en.wikipedia.org/wiki/GpsDrive
No exact match found.