[spatialfiend]

I haven't dug around the code much but I assume this is using "As the Crow Flies" distances between points? I don't see any references to OSM or street network data.

[ajmichael]

We tried out "as the crow flies", OSM with the OSRM Distance Matrix API, and the Google Maps Distance Matrix API. We're currently using Google API although we may switch back to OSRM for scaling purposes.

[karussell]

For an open source project using OSM services might be wise not only scaling-wise :)

See 10.4 c) iv) "No asset-tracking unless you have purchased the applicable Maps for Work license." https://developers.google.com/maps/terms#10-license-restrict...