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 for converting OSM data into a PostGIS database:

 * [http://sourceforge.net/projects/osm2postgis/ OSM2PostGIS]
 * [http://www.gdal.org/drv_osm.html ogr2ogr osm]
 * [https://imposm.org/ imposm]
 * [http://osmcode.org/libosmium/ libosmium]


OpenStreetmap Wiki: [http://www.openstreetmap.org/]
Openstreetmap Wiki Data Access: [https://wiki.openstreetmap.org/wiki/Databases_and_data_access_APIs#Database_Schemas]