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 reference implementation of the Polish geobotanical grid
Apl. móvil de Información georeferenciada + visor 3D escritorio
FAA digital chart viewer for iPhone and iPad
An Android App Dealing with Smartphone Sensors
a free and open map of wireless communicating objects