that I use together with gpsdings.
GPS
- GPSBabel - translation between different gps data formats; data transfer to and from receiver
- GPS Track Maker (Win only) - data transfer to and from receiver; graphical editing of gps data
- jEdit (with XML and Sidekick plugins) - textual editing of gps data (in gpx format)
- Google Earth - gps data visualization
- Google Maps - gps data visualization
JPEG/EXIF
- exiv2 - gpsdings can use exiv2 to write gps information to the exif tag of a photograph
- photomolo/exifiron - (automatic) lossless rotation of digital photographs
-
exiftool
exiftool -TagsFromFile source.jpg target.jpg
will copy EXIF data from one file to another (e. g. to a composite panorama image from one of its components)