Traccar GPS Tracking System
Viking is a free/open source program to manage GPS data
GPS track editor for editing tracks and planning (multiple) day tours
Transport coordinate between earth(WGS-84) and mars in china(GCJ-02)
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
A C library for parsing/normalizing street addresses around the world
Java Library for working with gpx files
A library to generate short codes
A reference implementation of the Polish geobotanical grid
CAD 2D for Land Surveying and Civil
Trasforma coordinate da epsg per google maps
NMEA libary for java (protocol of GPS devices)
Apl. móvil de Información georeferenciada + visor 3D escritorio
See you and your friends on a map
CAD 2D for Land Surveying,Civil and more
Customization of OpenGTS look and feel
FAA digital chart viewer for iPhone and iPad
Plugin for OpenCPN