- ClearMaps - GIS Directory Listing including lists of GIS software vendors, GIS organizations, GPS, remote sensing, free GIS data, and so on.
- Colorado's Portal - Categories for employment, internships/volunteering, data, events, education.
- GIS Landbase Information and Data Links - Lists national, regional, state and local sources for landbase related information and data.
- The GIS Notebook - A complete list of GIS web sites.
- LLEK Bookmarks Scientific Search Engines - Cartography/GIS/Remote Sensing - A comprehensive catalog of scientific resources and media worldwide but especially in German and English: Directories of Cartography Journals; Cartography-related catalogs of scientific search engines;additional starting points and sites of special interest.
- MapDawg's GIS - Links to maps, spatial data, and other items related to geography.
- Spatial Hydrology - Gateway to the world of hydrologic modeling, GIS, GPS and remote sensing.
- The World of Maps - Links to catalogues of map collections and archives.
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