Prune

GpsPrune is an application for viewing, editing and converting coordinate data from GPS systems. Basically it's a tool to let you play with your GPS data after you get home from your trip.
Main features:
- Loading of coordinate data from file in any text-based format, with any combination of fields and any separator, or in GPX or KML or KMZ or NMEA format.

Xml files can be zipped or gzipped.
- Loading of coordinate data from GPS receivers using gpsbabel.
- Top-down, zoomable, draggable view of data points including map images from Openstreetmap or any similar map tile server (eg opencyclemap, openpistemap).