GTOPO30 - Global Topographic Data - Digital elevation model (DEM) developed to meet the needs of geospatial data users for 30-arc second elevation data.

National Geospatial Data Framework - United Kingdom - Geospatial data infrastructure for the United Kingdom. Runs the UK Standard Geographic Base.

United States National Imaging and Mapping Agency - Standardization reports from the Department of Defense on geospatial standards and specifications.

Energisite.com Well Data GIS for the Petroleum and Gas Industries - Internet delivery of online digital and raster well logs, well data, GeoCadd culture, and Analytical software using esri and AutoDesk MapGuide and AnGIS technologies.

Resource Science, Inc. - RSI offers high-quality GIS databases geared towards the minerals industry, including digital geology, topography, and mineral site data. Free demos are available for download.

Spot Image - Distributor of earth observation raster imagery received from optical and radar remote sensing satellites.

GIS Data Depot - Provides free GIS data downloads and creates custom spatial data CD-ROMs.

Texas Natural Resources Information System - Clearinghouse for natural resources and GIS data. Online holdings include DOQs, DEMs and many vector datasets.

Shenandoah Valley Data Clearinghouse - Metadata and geospatial data relating to the Shenandoah Valley, Virginia.

Hawaii Statewide GIS Program - Free downloadable GIS spatial data, metadata, and maps.

United States Geological Survey - National Mapping Information - National mapping information from the U.S. Geological Survey. A good place to start the search for many kinds of GIS data.

MapFocus GeoTIFFs - Digital raster graphics for GIS and CAD applications. Includes continental US coverage, full resolution topography.

United States National Atlas - Map layers available to the public.

Internet Connectivity Enterprise - Draws upon multiple sources in developing the Geographic Data Warehouse. Data is standardized across counties.

The Earth Map Gallery - Offers satellite imagery of the Earth and detailed city street plans on CD for personal and commercial use.

Transnational Wadden Sea Information Service - Indices, GIS datasets and data source holders in countries around the Wadden Sea.

Tennessee Spatial Data Server - GIS data for the state of Tennessee. DOQQs, DRGs, DEMs, boundaries, wetlands, and geology.

Louisiana Statewide GIS - Contains GIS and mapping data on the state of Louisiana.

TerraPoint - Readily available and affordable digital earth surface data using LIDAR technology.

GeographX Digital Mapping - New Zealand land information and GIS services. Site offers some free data.

GIS Portfolio - A series of GIS projects.

MapMart - Online ordering of Digital Mapping and Aerial Photography. Specializing in USGS products - DLGs, DOQs, DEMs, DRGs - as well as customized mapping

Rainwater Basin GIS data site - This site provides free GIS data sets pertaining to the Rainwater Basin wetlands in Nebraska.

Rhode Island GIS - Data clearinghouse for the state of Rhode Island.

MapSoftware - Sonoma County parcel maps and topo maps available on CDROM.

Cartografx Corporation - We sell Vector Globe World Atlas on CD-Rom. This software gives the user extremely detailed maps of the world in both topographical and political formats. It is fun to use and also educational.

The DataStore - Offers downloadable digital GIS data and maps.

TPS Products and Services, Inc. - Offers demographic, census and zip code databases, and data conversion and CASS certification services.

Geographic Data Technology - Digital map database compiler focused on the Americas.

Digital Wisdom - Offers royalty free worldwide relief maps.

Global Land Cover Facility - Satellite imagery of the Earth, classified images of the Earth's land cover, and marsh area health data.

New York State GIS Clearinghouse - Operated by the New York State Office for Technology. Provides access to the New York State GIS Metadata and Data Repository.

Community Cartography - An Internet mapping service and spatial data warehouse.

The Climate Source - Distributor of spatial climate data developed by Oregon State University's PRISM mapping program.

Yukon Department of Renewable Resources - Site offers downloadable data on the Yukon territory.

Geospace - Provides spacial data services.

National Spatial Information Framework - South Africa - Geospatial data infrastructure for South Africa.

Metart - ARTEMIS and AGROMET data and information. Satellite images, meteorological data and related tools.

Baltic Sea GIS, Maps and Statistical Database - GIS data of land cover, population and other information for the Baltic Sea drainage basin.

Infoshare: Community Data on New York City - Profile and compare neighborhoods, and produce original tables.

The Data Depot - A catalogue of European mapping, geocoding and geodemographic data sets for use in GIS software.

Colorado Office of Emergency Management: Cartography and Mapping - State and local government oriented GIS data.