Share one GPS among several applications.
Use Garmin USB GPS receivers with standard GPS applications.
GPS simulation and logging.
More stable GPS connection. In particular to Bluetooth GPS receivers
Share a GPS over a network, ActiveSync, Bluetooth or HTTP.
Connect a GPS to Google Earth
Connect Garmin nRoute to a normal GPS
Multiplex and split NMEA streams, and more
Connect to GpsGate Server or GpsGate.com for sharing over the Internet.