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Viking vs GPX Viewer: catalog facts
Viking	GPX Viewer
Free Free and open source under the GNU GPL.	Freemium Free to use, with offline maps and other features available as paid extras.
Windows, Linux	Android
Edits tracks, routes and waypoints in GPX, KML and TCX Shows OSM, Bing Aerial and other map layers	Opens GPX, KML, KMZ and LOC files Graphs for elevation, speed, heart rate, cadence and power
Real-time GPS and Mapnik rendering are not available on Windows GTK interface looks dated on Windows	Android only Offline maps require a paid upgrade
Downloadable app	Downloadable app
Open source	Closed source
License: GPL	License not stated
No account needed	Not stated if an account is 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 September 23, 2026

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