OpenStreetMap powers map data on hundreds of web sites, mobile apps, and hardware devices.OpenStreetMap is built by a community of mappers that contribute and maintain data about roads, trails, cafés, railway stations, and much more, all over the world.
OpenStreetMap emphasizes local knowledge. Contributors use aerial imagery, GPS devices, and low-tech field maps to verify that OSM is accurate and up to date.
OpenStreetMap's community is diverse, passionate, and growing every day. Our contributors include enthusiast mappers, GIS professionals, engineers running the OSM servers, humanitarians mapping disaster-affected areas, and many more.
OpenStreetMap is open data: you are free to use it for any purpose as long as you credit OpenStreetMap and its contributors. If you alter or build upon the data in certain ways, you may distribute the result only under the same licence.
Software for viewing maps
The most obvious software to employ to make use of the data provided by the OpenStreetMap project, is to view it in any ordinary web browser via Hypertext Transfer Protocol (HTTP).
2. GNOME Maps:
it received support for OpenStreetMap
FoxtrotGPS is a GTK+-based map viewer, that is especially suited to touch input. It is available in the SHR or Debian repositories.
Another GTK+-based map viewer.