Multidisciplinary

1.  Wyoming Data Repository, a research data management system for the University of Wyoming and Wyoming Community Colleges

2. Archiv, an e-print service for Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics.

3. 3TU-Data , A long-term archive for storing scientific data.

4. DANS, an electronic archiving service open to all researchers in the arts, humanities and social sciences.

5. DataONE, a federation of data repositories for earth observations data, including data from fields such as ecology, biology, evolution, and environmental sciences such as hydrology, oceanography, and atmospheric science.

6. Dataverse, an archival service for social science, health, medicine, and humanities research.

7. Dryad (https://www.datadryad.org/), international repository of data in basic and applied biosciences.

8. Entrez, a directory of chemical, biochemical, biomedical, and medical databases from the U.S. National Center for Biotechnology Information.

9. Freebase, for data in all fields.

10. KNB, an international data repository containing ecology, biology, and environmental science data.

11. PANGAEA, Publishing Network for Geoscientific & Environmental Data

Archaeology

1. Archaeology Data Service.

2. Open Context.

Astronomy (see also physics)

1. Archiv, an e-print service for Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics.

2. Astronomical Data Archives Center.

3. Astrophysics Data System.

4. The Canadian Astronomy Data Centre.

5. National Space Science Data Center.

Biology

1. Databases at the European Bioinformatics Institute.

2. DataBasin.

3. Dryad (https://www.datadryad.org/).

4. Global Biodiversity Information Facility

5. Molecular Biology Databases .

6. PaleoBiology Database.

7. Peptidome.

8. RCSB Protein Data Bank.

 Chemistry

1. ChemSpider.

2. ChemSynthesis.

3. CrystalEye.

4. Crystallography Open Database.

5. eCrystals.

6. NMRShiftDB.

7. ChemStar.

8. Open Notebook Science Solubility Challenge.

9. ZINC.

10. DOE Data Explorer.

Computer Science

1. Archiv, an e-print service for Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics.

Environmental sciences

1. British Atmospheric Data Centre (BADC).

2. Climate Change Data Portal.

3. Climate Data.

4. National Ecological Observatory Network (NEON).

Geology

1. GSA Data Repository. 

Geoscience and GIS

1. GeoCommons.

2. Geodata Repository.

3. GeoGratis.

4. GeoNames.

5. ShareGeo.

Hydrology

1. CAUSHI .

Linguistics

1. Open Language Archives Community (OLAC).

Mathematics

1. Archiv, an e-print service for Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics.

2. Math Archives.

Medicine

1. Gene Expression Omnibus .
   

2. Melanoma Molecular Map Project.

3. NeuroMorpho. Neuronal morphology data.

Physics (see also Astronomy)

1. Archiv, an e-print service for Physics, Mathematics, Computer Science, Quantitative Biology, Quantitative Finance and Statistics.

2. Blue Obelisk Data Repository.

 Social sciences

1. Australian Social Science Data Archive.

2. CESSDA Data Portal.

3. Digital Repositories E-Science Network

4. Economic and Social Science Data Service.

5. ICPSR (Inter-University Consortium for Political and Social Research).