U-gotMe is the software I wrote to download and upload tracks, routes and waypoints to the I-gotU series of GPS loggers. It currently supports the GT-800, GT-800Pro, GT-820Pro and GT-900Pro.
10-05-2014: Version 2.1 released. See download section.
U-gotMe Comparing GTs to other GPSses
U-gotMe – The GTs compared for running