General favorites

• http://dict.leo.org
  LEO, my favourite online dictionarry, english-german
• http://www.britannica.com
  Famous british encyclopedia, online access to the Merriam-Webster dictionary
• http://fgdclearhs.er.usgs.gov
  GIS data search engine from the Federal Geographic Data Committee, the Google for GIS related datasets
• http://geoengine.nima.mil
  NIMA geoserver: Free global data, Digital Chart of the World, global DEM, etc.
• http://edcimswww.cr.usgs.gov/pub/imswelcome
  EOS data gateway: Fantastic data products from NASA and other data centers, GIS and satellite data
• https://zulu.ssc.nasa.gov/mrsid
  MrSID geoserver from the NASA: Free Landsat images in true colour, covers the entire earth
• http://edcdaac.usgs.gov
  Land Processes DAAC: All kind of geodata from the US and the world
• http://freegis.org
  Free GIS initiative: All kind of free GIS related software
• http://www.visualizationsoftware.com/3dem.html
  Homepage of 3DEM, a free software for creating 3D views and flights, one of my absolute favourites
• http://www.esri.com
  Homepage of ESRI
• http://www.download.com
  All kind of freeware and shareware for download

Software

• http://www.lizardtech.com/download
  Homepage of Lizardtech, the developer of MrSID converters and free MrSID viewers
• http://www.esri.com
  Homepage of ESRI, the company which develops ArcView and ArcInfo
• http://www.clarklabs.org
  Homepage of Clarklabs, the developer of the GIS software IDRISI
• http://www.visualizationsoftware.com/3dem.html
  3DEM, a phantastic freeware program for 3D-visualisation and the cration of VRML files
• http://freegis.org
  GIS Freeware Initiative: all kinds of free software
• http://grass.baylor.edu
  GRASS GIS, a very comprehensive GIS-System, freeware for UNIX/LINUX operation systems
• http://www.download.com
  All kinds of shareware and freeware for download

Tutorials

• http://www.gisdevelopment.net/tutorials/index.htm
  Comprehensive overview and additional links to various GIS tutorials, in english language

Hints and Utilities

• http://www.gisportal.com
  Great and comprehensive GIS-Portal, all kind of links and geodata
• http://www.gis.com
  Great and comprehensive GIS-Portal, managed by ESRI, links to every section of GIS and geoinformatics

Spatial datasets:

• http://fgdclearhs.er.usgs.gov
  GIS data search engine of the US Federal Geographic Data Committee, the google for GIS datasets
• http://geoengine.nima.mil
  NIMA geoserver: Free global geodata, Digital Chart of the World, global DEM, etc.
• http://edcimswww.cr.usgs.gov/pub/imswelcome
  EOS data gateway: Great geodata of the NASA and other data centers, GIS and remote sensing data
• https://zulu.ssc.nasa.gov/mrsid
  MrSID geoserver of the NASA: Free landsat images, global coverage
• http://edcdaac.usgs.gov
  Land processes DAAC: all kind of geodata of the conterminous US and the entire world
• http://dataservice.eea.eu.int/dataservice
  Datapage of the EEA (European Environment Agency, good geodata of the european continent)
• http://www.calle.com/world
  Global gazeeter, informations about the position and altitude of nearly every place in the world
• http://164.214.2.59/gns/html/index.html
  Geonet names server, comprehensive global database with informations about all kind of point objects (villages, churches, dams, etc.)
• http://www.gisdatadepot.com
  Comprehensive collection of all kind of geodata of the USA and the entire world
• http://www.spatial-info.org/shtml/init_csi.shtml
  Homepage of CGIAR (Consortium for spatial information), network of organisations with a lot of great geodata
• http://www.maps.ethz.ch/map_catalogue.html
  Links the various global data sets, great und consistent collection the the Zürich university
• http://www.visibleearth.nasa.gov
  No special GIS data, but satellite images which illustrate al kind of geomorphologic processes in the world
• http://www.tec.army.mil/gis/index.htm
  Very comprehensive collection of links of the USACE (US Army Corps of Engineers), links for GIS and geodata
• http://www.unep.net
  Homepage of the UNEP (United Nations Environmental Program), very good geodata for free download, various portals with different geographical and thematical topics

Special topics

• http://www.iwmi.cgiar.org/WAtlas/atlas.htm
  Digital climate data in very high resolution, best global data available, issued by IWMI (International water management institute)
• http://www.ngdc.noaa.gov/mgg/image/2minrelief.html
  ETOPO2 homepage, global DEM with additional bathymetric data
• http://edcdaac.usgs.gov/gtopo30/gtopo30.html
  GTOPO30 and HYDRO1K, the most cited global digital elevation models
• http://www.dlr.de/srtm
  SRTM homepage of the DLR (German center of remote sensing), all kind of SRTM datasets
• http://www.terrainmap.com
  Homepage of terrainmap, if you are interested in digital elevations models, this will be your favourite site in future
• http://certnetra.cr.usgs.gov/oilgas/wep/products/data.htm
  Favourite site for geologists who are working globaly, digital geological maps of any area of the world, free download in shapefile format or as a pdf-file
• http://www.itc.nl/~rossiter/research/rsrch_ss_digital.html
  Great site for soil scientists, useful links to pedological data centers and universities
   

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