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Viking vs GPS Visualizer: catalog facts
Viking	GPS Visualizer
Free Free and open source under the GNU GPL.	Free Free to use, supported by donations.
Windows, Linux	Web
Edits tracks, routes and waypoints in GPX, KML and TCX Shows OSM, Bing Aerial and other map layers	Many output formats, from Leaflet maps to KML and SVG Elevation profiles and elevation lookup
Real-time GPS and Mapnik rendering are not available on Windows GTK interface looks dated on Windows	Dense, dated interface with many options Online only
Downloadable app	Web application
Open source	Closed source
License: GPL	License not stated
No account needed	No account needed
Not stated if it works offline	Needs internet
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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