OpenStreetMap (OSM) is a free editable map of the whole world. OSM allows you to view, edit and use geographical data in a collaborative way from anywhere on Earth.

The OSM data is publicly available via several mirrors. See [http://wiki.openstreetmap.org/wiki/Planet] for instructions on how to obtain OSM data.

Tools to convert OSM data into a PostGIS database:
 * [https://sourceforge.net/projects/osm2postgis/ OSM2PostGIS]

For more information go to: [http://www.openstreetmap.org/]