This format can...
read and write waypoints
This format can read and write TomTom .ov2 (POI) files, as used by the TomTom GO and TomTom Navigator. It has been tested with an original TomTom GO running version 5.00 of the TomTom software. There may be some records that confuse the input module - if you have an example of such a record "in the wild", and you aren't restricted from sharing it, we encourage you to post to the gpsbabel-misc mailing list to contact a developer.
Note that in addition to the .ov2 file, you will need a .bmp file for the icon. It should be 22x22 and 16 colors, and have the same name (not including the extension) as the .ov2 file.