1.graphhopper / graphhopperOpen source routing engine for OpenStreetMap. Use it as Java library or standalone web server.openstreetmapjavageospatialdijkstradirectionsrouting-engine+7 moreJavaAPACHE-2.06.8K total2K forks+7 starsfrom 6,743 · score 2.08
2.GIScience / openrouteservice🌍 The open source route planner api with plenty of features.directions-apirouting-engineopenstreetmaproutingosmisochrones+1 moreJavaGPL-3.02K total488 forks+1 starsfrom 1,987 · score 0.69