The map created by Open Street Map, a project building a free, open-source, editable map of the world, is now available as a layer in Bing Maps. Users who download the OpenStreetMap app (and Microsoft Silverlight) can switch between the traditional layers, which include bird's eye, aerial and standard street map views, and Mapnik, a colorful map that includes businesses and landmarks labeled by users and devices through Open Street Map. Sponsor Open Street Map crowdsources location data by making it possible for users to add to its database.