Accurately Locate Smartphones using Social Engineering
Transport coordinate between earth(WGS-84) and mars in china(GCJ-02)
Build your own GPS unit
Create, edit view GPX tracks (in the background - online maps)
A C library for parsing/normalizing street addresses around the world
CAD 2D for Land Surveying and Civil
Land survey field crew data management for .RAW and .JOB file types.
CAD 2D for Land Surveying,Civil and more
a free and open map of wireless communicating objects
... the open-source glide computer