GraphHopper uses OpenStreetMap and GTFS data by default and it can import other data sources too. Beyond this "A-to-B" routing it supports "snap to road", Isochrone calculation, mobile navigation and more. ![]() ![]() It can be used as a Java library or standalone web server to calculate the distance, time, turn-by-turn instructions and many road attributes for a route between two or more points. GraphHopper is a fast and memory-efficient routing engine released under Apache License 2.0.
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