Geo-datos libres con OpenStreetMaps
Big picture
http://wiki.openstreetmap.org/images/1/15/OSM_Components.png
http://wiki.openstreetmap.org/index.php/Develop
Protocolos (API)
http://wiki.openstreetmap.org/images/3/3f/OSM-protocol-stack.png
http://wiki.openstreetmap.org/index.php/OSM_Protocol_Version_0.4
http://www.openstreetmap.org/api/0.4/map?bbox=-2.5772786125,43.11136064375,-2.4893879875,43.15530595625
Exportación de datos
http://wiki.openstreetmap.org/images/thumb/8/8c/Render_diagram.png/497px-Render_diagram.png
http://wiki.openstreetmap.org/index.php/Osmarender
http://wiki.openstreetmap.org/images/thumb/2/2c/GreaterLondon.png/647px-GreaterLondon.png
http://es.youtube.com/watch?v=zx85AFJ1vc4
xmlstarlet tr osmarender.xsl osm-map-features.xml > map.svg