DB Centers provide experts, datasets, maps, galleries, working groups that facilitate more effective collaboration.

Data.gov increases the ability of the public to easily find, download, and use datasets that are generated and held by the Federal Government.

The GeoConnections Discovery Portal is a metadata catalogue that enables GIS users, developers and data suppliers to find, evaluate, access, visualize and publish Canadian geospatial and geoscience data products and Web services.

NGDC provides stewardship, products, and services for geophysical data from our Sun to Earth and Earth's sea floor and solid earth environment, including Earth observations from space.

Earth observation data and information for NERC science and survey.

The NEES Project Warehouse is the centralized data repository for sharing and publishing earthquake engineering research data from experimental and numerical studies.

ShareGeo Open is a spatial data repository that promotes data sharing
between creators and users of spatial data.

This site provides data that are designed to be used in general mapping and in the analysis of surface-water systems.

Earth Resources Observation and Science (EROS) Center is a remotely sensed data management, systems development, and research field center for the USGS Climate and Land Use Change Mission Area.

The World Data System provides a data portal search across scientific data catalogs.