OpenStreetMap

OSM Homepage: http://www.openstreetmap.org/

Import

• GRASS_AddOns#v.in.osm (fairly rough script)

Conversion with Mapnik to raster tiles may work, but be very careful about projection issues, typical online web map tiles are not appropriate for GIS import.

Data as shapefiles

Get data from here:

• http://download.geofabrik.de/osm/ ,or
• http://downloads.cloudmade.com/

Then import with v.in.ogr

Data from WMS

• No free/open server known - Badly needed

Then import with r.in.wms