What is Reddit's opinion of Viking GPS data editor and analyzer?
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➔ Viking GPS data editor and analyzer website

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1 review of this app found across Reddit:

Its nice https://sourceforge.net/projects/viking/

Also OSM has API's you can download your own data https://wiki.openstreetmap.org/wiki/API

if you really want to get fancy most country governments have GIS data you can download.

But Viking should be sufficient