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	NOS Data Explorer - http://www.noaa.gov Offers interactive mapping tools that allow users to locate NOS products in any area in the United States and its territories through a metadata catalog.
	USGS Geography - http://geography.usgs.gov/ National mapping information from the U.S. Geological Survey. A good place to start the search for many kinds of GIS data.
	Geographic Data Technology - http://www.geographic.com/ Digital map database compiler focused on the Americas.
	GeoNames - http://www.geonames.org/ A worldwide geographical database with a search function, browsable maps, and downloadable data files available free under a Creative Commons attribution license.
	New York State GIS Clearinghouse - http://www.nysgis.state.ny.us/ Operated by the New York State Office for Technology. Provides access to the New York State GIS Metadata and Data Repository.

	United States National Atlas - http://www.nationalatlas.gov/atlasftp.html Map layers available to the public.
	GIS Data Depot - http://www.gisdatadepot.com/ Provides free GIS data downloads and creates custom spatial data CD-ROMs.
	Kansas Geospatial Community - http://gisdasc.kgs.ku.edu State of Kansas Data access and support center (DASC). DASC catalogues, archives, and distributes databases with FGDC compliant metadata and direct FTP access.
	Digital Chart of the World - http://www.maproom.psu.edu/dcw/ Download the boundaries and layers of different countries, in Arc/INFO export format.
	Hawaii Statewide GIS Program - http://www.hawaii.gov/dbedt/gis/ Free downloadable GIS spatial data, metadata, and maps.

	GTOPO30 - Global Topographic Data - http://edcwww.cr.usgs.gov/landdaac/gtopo30/gtopo30.html Digital elevation model (DEM) developed to meet the needs of geospatial data users for 30-arc second elevation data.
	The Climate Source - http://www.climatesource.com/ Distributor of spatial climate data developed by Oregon State University's PRISM mapping program.
	Rhode Island GIS - http://www.edc.uri.edu/rigis/ Data clearinghouse for the state of Rhode Island.
	Forest Spatial Information Catalog - http://gislab.cifor.cgiar.org/fsic The Forest Spatial Information Catalog (FSIC) is a central repository for forest related spatial metadata.
	University Library Digital Spatial Data Catalog - http://quod.lib.umich.edu/cgi/b/bib/bib-idx?g=gisall Searchable catalog of data/metadata managed by Numeric and Spatial Data Services at the University of Michigan Library

	Tennessee Spatial Data Server - http://www.tngis.org GIS data for the state of Tennessee. DOQQs, DRGs, DEMs, boundaries, wetlands, and geology.
	National Spatial Information Framework - South Africa - http://www.nsif.org.za/ Geospatial data infrastructure for South Africa.
	Baltic Sea GIS, Maps and Statistical Database - http://www.grida.no/baltic/ GIS data of land cover, population and other information for the Baltic Sea drainage basin.
	Infoshare: Community Data on New York City - http://www.infoshare.org/ Profile and compare neighborhoods, and produce original tables.
	Geospace - http://www.geospace.co.za/ Provides spatial data services.

	GIS Express - http://www.gisexpress.com Offers satellite and aerial images.
	The Data Depot - http://www.datadepot.co.uk/ A catalogue of European mapping, geocoding and geodemographic data sets for use in GIS software.
	Community Mapping Network - http://shim.bc.ca/ Created to share a wealth of natural resource information and maps with communities in British Columbia, Canada. Allows users to add data.
	Digital Data Technologies, Inc (DDTi) - http://www.ddti.net Road centerline and address base mapping for GIS and E9-1-1.
	GeographX Digital Mapping - http://www.geographx.co.nz/ New Zealand land information and GIS services. Site offers some free data.

	American Digital Cartography, Inc. - http://www.adci.com/ Providers of digital mapping data for use with CAD and GIS systems.
	Census Watch - http://www.censuswatch.com/ ESRI sponsored clearing house, providing information about US census tract TIGER data availability and modifications.
	Doyle's GIS Info Page - http://www.doylesdartden.com/gis/ Information about GIS and Links to GIS site for mostly free data for the USA.
	MapFocus GeoTIFFs - http://www.mapfocus.com/ Digital raster graphics for GIS and CAD applications. Includes continental US coverage, full resolution topography.
	Transnational Wadden Sea Information Service - http://www.waddenseamaps.net/ Indices, GIS datasets and data source holders in countries around the Wadden Sea.

	Rainwater Basin GIS data site - http://www.calmit.unl.edu/rwb This site provides free GIS data sets pertaining to the Rainwater Basin wetlands in Nebraska.
	Energisite.com - http://www.energisite.com/ Internet delivery of online digital and raster well logs, well data, GeoCadd culture, and Analytical software using esri and AutoDesk MapGuide and AnGIS technologies.
	Earthmaps - http://www.earthmaps.com/ Data, travel maps, recreation, and earth science applications.
	Go Spatial Limited - http://www.gospatial.com Producer of digital geographic data suitable for reference base mapping at global, regional or national levels.
	Perfect SRTM Project - http://www.geocities.com/drgportugal/perfect/ SRTM is a 90m-resolution global elevation database.

	@City Inc - http://www.atcity.com iStreetView - 360-degree Geocoded Street level Imaging on the Web
	3D landscape visualization for MAXON CINAMA 4D - http://www.digital-landscape.com/ Offers wire-meshes for the rendering software MAXON CINEMA 4D taken from the GTOPO30 dataset of the U.S. Geogical Survey. Also provide matched satellite images textures from NASA.
	microDATA GIS - http://www.microdatagis.com Spatial databases and enhanced 911 (E911) mapping and database solutions.
	Aerial photography and satellite imagery - http://www.landsat.com/ortho/index.html Company sells 1 foot orthoimagery and LANDSAT satellite imagery.
	Texas Natural Resources Information System - http://www.tnris.state.tx.us/ Clearinghouse for natural resources and GIS data. Online holdings include DOQs, DEMs and many vector datasets.

	Community Cartography - http://www.comcarto.com An Internet mapping service and spatial data warehouse.
	Louisiana Statewide GIS - http://atlas.lsu.edu/ Contains GIS and mapping data on the state of Louisiana.

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