OpenStreetMap is a collaborative project that creates and provides free, open-source geographic data and mapping to anyone who wants to use it. It is often referred to as the “Wikipedia of maps” because it relies on a community of volunteers to contribute and edit geographic information about roads, trails, cafés, railway stations, and much more, all over the world.
A non-proprietary alternative to Google Maps, OpenStreetMap uses open data – you are free to use it for any purpose as long as you credit OpenStreetMap and its contributors.