Viking is a free/open source program to manage GPS data
GPS track editor for editing tracks and planning (multiple) day tours
Open source system for GPS tracking devices
NMEA 0183 library for Java
Tool to work on map data, to check the data and generate your own maps
CAD 2D for Land Surveying and Civil
NMEA libary for java (protocol of GPS devices)
Apl. móvil de Información georeferenciada + visor 3D escritorio
CAD 2D for Land Surveying,Civil and more
Analyze gpx files and store summary in Sqlite database
a free and open map of wireless communicating objects