GPS track editor for editing tracks and planning (multiple) day tours
Open source system for GPS tracking devices
Tool to work on map data, to check the data and generate your own maps
GPS mapping and management software
Satellite Emulator
A tile-based map viewer with support for GPX files.
Using PHP-CLI to parse NMEA data to generate depth maps with GD
Analyze gpx files and store summary in Sqlite database
a free and open map of wireless communicating objects