Notes about the GTM file extension:
To open this file type, a required software must be installed. Without it you only see a Windows message "The following file cannot be opened
" (Windows 7) or "How do you want to open this file?
" (Windows 10) if you double-click the file. There click on "More apps"
and choose a suitable software to view such files on your PC or from email attachments.
The GTM file type is primarily associated with 'GPS TrackMaker' by Geo Studio Technologies Ltd.. The file format has the extension .GTM (initials for GPS TrackMaker) and stores all Waypoints, Tracklogs and Routes as well as information related to the screen display, background and grid color, Waypoint text, User-defined text, etc. Digitized images are also included in the .GTM file.