Traccar GPS Tracking System
Simple GPS tracking server
Build your own GPS unit
Viking is a free/open source program to manage GPS data
Transport coordinate between earth(WGS-84) and mars in china(GCJ-02)
Open source system for GPS tracking devices
Minimalistic wide-open GPS-locator/tracker
NMEA 0183 library for Java
A library to generate short codes
CAD 2D for Land Surveying and Civil
Land survey field crew data management for .RAW and .JOB file types.
See you and your friends on a map
Scientific research work of Francesco Montorsi,Univ. of Modena, Italy
CAD 2D for Land Surveying,Civil and more
FAA digital chart viewer for iPhone and iPad
GPSBabel converts and transfers data like waypoints, tracks & routes.