GPS Applications using Google MapsGPS Visualizer - A free utility for mapping GPS tracklogs and waypoints with various background maps. It allows you to overlay GPS tracks onto a Google Map.Bumpr.com - Make interesting maps with your GPS device. The concept is pretty simple, load your track logs from a Garmin and then select two points in time to draw a map to which you could link or subscribe to its RSS feed. The source code is also free.APRS (Automatic Position Reporting System) - Ham radio operators hook their GPS boxes into their radio sets and display positions on a Google Map.
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