GPSBabel Download - It converts map data between popular GPS receivers and mapping programs
GPSBabel demonstration - YouTube
GitHub - GPSBabel/gpsbabel: GPSBabel: convert, manipulate, and transfer data from GPS programs or GPS receivers. Open Source and supported on MacOS, Windows, Linux, and more. Pointy clicky GUI or a command line
GPSBabel - OpenStreetMap Wiki
GPSBabel Alternatives and Similar Software | AlternativeTo
GPSBabel Screenshots: Mac, Linux, and Windows GUI (with translation) for GPSBabel.