QGIS Free, open source Geographic Information System
Nordpil This is a complete database of basemap/reference GIS data in Wagner VII projection, using the Natural Earth 2.0 database reprojected and edited.
Global Map data archives Use of geospatial information is crucial for solving various issues around the world including global environmental problems
DIVA-GIS Select and download free geographic (GIS) data for any country in the world
United Nations Environment Programme The Environmental Data Explorer is the authoritative source for data sets used by UNEP and its partners in the Global Environment Outlook (GEO) report
Earth’s Data Platform Koordinates is a geospatial data management platform inspired by cracking GIS data out of vendor silos.
Data Research and
MapCruzin:GIS Project Specialists
Also, we have been providing free and low cost GIS software applications and programs, city, state and national level maps, geospatial data and shapefiles, GIS tutorials, GPS programs and tools, Satellite - aerial - remote sensing programs and maps, TOPO maps, and other resources
European Environment Agency Data and maps
NOAA Global Self-consistent, Hierarchical, High-resolution Geography Database (GSHHG) is a high-resolution geography data set, amalgamated from two databases: World Vector Shorelines (WVS) and CIA World Data Bank II (WDBII).
Shuttle Radar Topography Mission. This interface attempts to ease the pain of downloading elevation data from the Shuttle Radar Topography Mission
SRTM 90m DEM Digital Elevation Database
EarthEnv Global, remote-sensing supported environmental layers for assessing status and trends in biodiversity, ecosystems, and climate
ETOPO1 Global Relief Model ETOPO1 is a 1 arc-minute global relief model of Earth's surface that integrates land topography and ocean bathymetry.