開放源碼路由引擎，用於開放街地圖
5.0粒星（滿分5粒星） （根據1條評論）
關於:
Valhalla is an open-source routing engine and accompanying set of libraries for use with OpenStreetMap data. Valhalla is used within Mapzen, Mapbox, and Stadia Maps services and SDKs.
提供: