Welcome to Catalogue Service for Global Thematic Maps by ISCGM*.
Catalogue Service for Global Thematic Maps (CSGTM) is the comprehensive data catalogue service of geospatial information on a global scale for planning, environmental or disaster issues, research, education and more.
You can find the global thematic data such as Topography, Geography and more. (See Groups for more categories.)
*ISCGM: International Steering Committee for Global Mapping
Go to ISCGM website.