PhotoLinker
http://oregonstate.edu/~earlyj
Free software GPS
http://www.maps-gps-info.com/fgpfw.html
Corso cartografia digitale
http://www.progettotrio.it
http://gisblogit.blogspot.com
http://gisblogit.blogspot.com
http://www.gpsu.co.uk/links
http://www.agismap.com/gps.html
http://www.rigacci.org/wiki
http://gisblogit.blogspot.com
http://freegeographytools.com
http://googlemapsearth.wordpres
Sito online bello!
http://www.gpsvisualizer.com