They provide scientific information on transportation, natural resources, geology, weather and topography. National Imagery and Mapping Agency - NIMA provides imagery, imagery intelligence, and geospatial information in support of national security objectives. This site features free GIS software, online mapping and GIS training, demos, data, product and service information, user scripts, and more. Mercator's World Magazine - The Magazine of Maps, Exploration and Discovery. Devoted to the art, history, and science of maps and mapmaking, modern exploration, and historic discoveries.
Site includes information on the company, including products and services.
Artique - Developers of desktop software and programmer's library for cartographic works. Freelance Cartography - Custom Maps for any purpose. Computer Cartography at Northeastern Illinois University - Online course syllabus and assignments aimed at teaching mapping techniques to effectively display spatial information. Imagemaps from Wildgoose - Digital cartographic solutions from orthorectified images. Unique, low-cost geographic solutions.