Free vector and raster files. Include: cultural vectors such as administrative boundaries (countries), as well as physical vectors. Raster files include: shaded relief, bathymetry (ocean-depth), and natural earth. Public domain map dataset available at 1:10m, 1:50m, and 1:110 million scales.
Administrative areas in this database are countries and lower level subdivisions. GADM describes where these administrative areas are (the "spatial features"), and for each area it provides some attributes, such as the name and variant names.
The GEO portal is a gateway to global Earth Observation data, information, and services developed by the European Space Agency (ESA) in collaboration with the Food and Agriculture Organization of the United Nations (FAO) as contribution to the Global Earth Observation System of Systems (GEOSS).
CGIAR is a collection of research organizations studying poverty. This site contains four primary sets of data: Global High-Resolution Soil-Water Balance dataset, SRTM digital elevation data, Global Potential Evapo-Transpiration (Global-PET) and Global Aridity Index (Global-Aridity) dataset, and the University of East Anglia (UEA)’s CRU-TS. It is one of the most widely-used historical climate databases.