1.valhalla / valhallaOpen Source Routing Engine for OpenStreetMapopenstreetmapdijkstraastartileddirectionsisochrones+4 moreC++Other license6.4K total1K forks+381 starsfrom 6,029 · score 5.95
2.Project-OSRM / osrm-backendOpen Source Routing Machine - C++ backendosrmcppc-plus-plusroutingrouting-enginemap-matching+5 moreC++BSD-2-CLAUSE8.2K total4K forks+260 starsfrom 7,930 · score 5.56
3.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+160 starsfrom 6,594 · score 5.08
4.opentripplanner / OpenTripPlannerAn open source multi-modal trip plannerJavaOther license2.8K total1.2K forks+70 starsfrom 2,698 · score 4.26