GIS Data: Global
- Natural Earth Data
- Esri's ArcGIS Data Hub
- The Earth Explorer at USGS
- OpenStreetMap
- NASA's Socioeconomic Data and Application Center at Columbia University
- OpenTopography
- United Nations Environmental Programme
- Copernicus Open Access Hub (Sentinel satellite imagery)
- Food and Agricultural Organization of the United Nations
- World Health Organization
- International GIS Data at University of Pennsylvania