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The Geography Network provides access to a large collection of geographic data from many of the world's leading data publishers. This digital data is intended for use with geographic information system (GIS) software tools. The data collection includes a number of online data sets that you may preview online and download immediately. The collection also includes links to many other data sets that you may acquire directly from the data publisher.

Free Data Services
Discover many free data resources available online.

Software Tools
Free and commercial software that you can use to view geography data.

Discover and download data through these useful sites.
Free Data Download 
Discover free data download resources available online.