shippify/graphhopper

GraphHopper is a fast and memory-efficient Java routing engine that uses OpenStreetMap to provide various features, including simple routing, public transit routing, and customizable options for users and developers. It supports multiple weightings and pre-built routing profiles, allowing users to choose from car, bike, and other options, and also provides a simple web API and Android/Blackberry integration. The project has been open-sourced under the Apache License, making it easy for developers to embed it in their products.