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Viking vs GeoTag: catalog facts
Viking	GeoTag
Free Free and open source under the GNU GPL.	Free Free, from the developer's site or the Mac App Store.
Windows, Linux	macOS
Edits tracks, routes and waypoints in GPX, KML and TCX Shows OSM, Bing Aerial and other map layers	Set a photo's location by clicking on a map Uses ExifTool, so metadata edits do not degrade the image
Real-time GPS and Mapnik rendering are not available on Windows GTK interface looks dated on Windows	macOS only Current version requires macOS 26 or later
Downloadable app	Downloadable app
Open source	Closed source
License: GPL	License not stated
No account needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.