[GPSNavX]

There should be no difference between the Navionics charts offered by X-Traverse or directly from Navionics. The difference is the applications. iNavX uses the charts from x-traverse including Navionics and NV. Verlag. Also iNavX has waypoint import/export, GRIB weather overlay, NMEA via TCP/IP support. In otherwords iNavX has many more features then the basic viewer app from Navionics.

If you know of an AIS provider on the internet that provides NMEA AIS then iNavX will work. Just enter their IP and port address in the iNavX TCP/IP setup.