Ikke megen GIS data, men hjælp selv med til at gøre listen længere ...
Not much GIS data here but you may add to the list ...
Got some mapping software, but no geographic data? You're in luck. There are plenty of shapefiles, etc. at your disposal.
- TIGER - From the US Census Bureau, detailed data about roads, railroads, rivers, and zipcodes. Probably the most extensive you're going to find.
- OpenStreetMap - One of the best examples of data and community effort.
- Geocommons - Both data and a map maker.
- Flickr Shapefiles - Boundaries as defined by Flickr users.
Read more: http://flowingdata.com/2009/10/01/30-resources-to-find-the-data-you-need/