GPS log file viewer and analyzer
Viking is a free/open source program to manage GPS data
GPS track editor for editing tracks and planning (multiple) day tours
... the open-source glide computer
Create, edit view GPX tracks (in the background - online maps)
Minimalistic wide-open GPS-locator/tracker
NMEA 0183 library for Java
Tool to work on map data, to check the data and generate your own maps
Plugins for OpenCPN
eGPXviewer is a 3D GPX track viewer
Java Library for working with gpx files
A reference implementation of the Polish geobotanical grid
GPS mapping and management software
Trasforma coordinate da epsg per google maps
A tile-based map viewer with support for GPX files.
Toolbox for geoscientists and geo enthusiasts
NMEA libary for java (protocol of GPS devices)
Track your mobile device or cellphone via internet using OpenGTS/GPRMC
Using PHP-CLI to parse NMEA data to generate depth maps with GD
See you and your friends on a map