Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
83,885
PANGAEA - Data Publisher for Earth & Environmental Science
18,274
DataCite
16,753
Unknown
11,141
Directory of Open Access Journals: DOAJ Articles
10,530
Zenodo
9,257
Research Data Australia (Australian National Data Service - ANDS)
7,860
Springer Nature (via Crossref)
7,391
Natural Environment Research Council: NERC Open Research Archive
7,284
Wiley Online Library
5,788
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
5,658
Cambridge University Press
5,331
ScienceDirect (Elsevier - via Crossref)
5,259
National Institute of Polar Research Repository, Japan
4,931
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
4,657
PubMed Central (PMC)
3,777
Ohio State University (OSU): Knowledge Bank
3,628
eCite UTAS (University of Tasmania)
3,331
Université de Nantes: HAL-UNIV-NANTES
3,292
ScienceDirect (Elsevier)
3,106
Institut national des sciences de l'Univers: HAL-INSU
3,009
Copernicus Publications: E-Journals
2,886
LeibnizOpen (The Leibniz Association)
2,182
IEDA: Marine-Geo Digital Library (via DataONE)
2,085
Niedersächsisches Online-Archiv NOA
1,876
Digital.CSIC (Spanish National Research Council)
1,732
NASA Technical Reports Server (NTRS)
1,723
University of Tasmania: UTas ePrints
1,668
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
1,543
Informa (via Crossref)
1,497
University of California: eScholarship
1,462
Biodiversity Heritage Library (BHL)
1,419
MDPI Open Access Publishing
1,413
AU Digital Research Archive (American University)
1,349
Informa
1,270
National Library of Australia: Digital Collections
1,241
HAL Sorbonne Université
1,206
Frontiers: Figshare
1,158
David Rumsey Historical Map Collection (Cartography Associates)
1,151
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1,049
Australian National University: ANU Digital Collections
1,041
Oxford University Press
1,039
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
1,025
Defense Technical Information Center: DTIC Technical Reports database
955
University of Southampton: e-Prints Soton
947
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
914
Université Grenoble Alpes: HAL
907
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
881
HighWire Press (Stanford University)
861
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
853
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