Data.gov

The purpose of Data.gov is to increase public access to high value, machine readable datasets generated by the Executive Branch of the Federal Government. Data.gov includes searchable catalogs that provide access to "raw" datasets and various tools. In the "raw" data catalog, you may access data in XML, Text/CSV, KML/KMZ, Feeds, XLS, or ESRI Shapefile formats. The catalog of tools links you to sites that include data mining and extraction tools and widgets. Datasets and tools available on Data.gov are searchable by category, agency, keyword, and/or data format. Once in the catalog, click on the "name" (i.e, the name of the dataset or tool of interest) and you will be taken to a page with more details and metadata on that specific dataset or tool.