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QMapShack vs Viking: catalog facts
QMapShack	Viking
Free Free to download from its public repository.	Free Free and open source under the GNU GPL.
Windows, macOS, Linux	Windows, Linux
Combines vector, raster and elevation maps Trip planning and track viewing in one program	Edits tracks, routes and waypoints in GPX, KML and TCX Shows OSM, Bing Aerial and other map layers
GIS-style interface has a learning curve Documentation lives mainly in the repository	Real-time GPS and Mapnik rendering are not available on Windows GTK interface looks dated on Windows
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL
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 September 23, 2026

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