Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
363,697
Zenodo
37,962
University of Michigan: Digital Collections
29,695
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
22,654
Unknown
21,367
Arctic Data Center (via DataONE)
18,653
University of Washington, Seattle: Digital Collections
17,922
CyberLeninka (Scientific Electronic Library)
17,438
Research Data Australia (Australian National Data Service - ANDS)
11,249
NOAA NCEI Environmental Data Archive (via DataONE)
10,707
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
9,171
David Rumsey Historical Map Collection (Cartography Associates)
8,379
RePEc (Research Papers in Economics)
7,626
Natural Environment Research Council: NERC Open Research Archive
7,335
Springer Nature (via Crossref)
7,067
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
6,325
Frontiers: Figshare
6,182
JSTOR (via Crossref)
6,171
Dryad Digital Repository (Duke University)
5,829
OECD iLibrary (via Crossref)
5,817
Springer Nature
5,274
NASA Technical Reports Server (NTRS)
5,269
University of California: eScholarship
4,499
Arctic Institute of North America (via Crossref)
4,411
Informa (via Crossref)
4,278
Biodiversity Heritage Library (BHL)
4,113
ArXiv.org (Cornell University Library)
4,110
SFU Digitized Collections (Simon Fraser University)
4,066
Frontiers (Publisher)
3,907
Oxford University Press (via Crossref)
3,282
USGS Science Data Catalog (via DataONE)
3,232
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE)
3,187
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
3,002
Wiley Online Library
3,001
IEEE Publications (via Crossref)
2,999
Digital.CSIC (Spanish National Research Council)
2,831
IEDA: Marine-Geo Digital Library (via DataONE)
2,828
OLAC: Open Language Archives Community
2,772
IOP Publishing (via Crossref)
2,708
Cambridge University Press
2,553
King Abdullah University of Science and Technology: KAUST Repository
2,552
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
2,526
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
2,446
University of Nebraska-Lincoln: DigitalCommons@UNL
2,397
North Dakota State University (NDSU): Digital Horizons
2,244
National Library of Australia: Digital Collections
2,054
Université de Montréal (UdeM): Calypso - Collections d'objets numériques
1,871
Australian National University: ANU Digital Collections
1,839
the Digital Archaeological Record (via DataONE)
1,834
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
1,804
more ...