Content Provider
Directory of Open Access Journals: DOAJ Articles
55,594
Springer Nature (via Crossref)
4,894
Unknown
4,620
ScienceDirect (Elsevier - via Crossref)
3,905
Wiley Online Library
3,375
DataCite Metadata Store (German National Library of Science and Technology)
3,181
LeibnizOpen (The Leibniz Association)
2,646
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2,591
Niedersächsisches Online-Archiv NOA
2,221
University of Calgary Journal Hosting
2,120
Cambridge University Press
2,024
University of Tromsø: Munin Open Research Archive
1,576
Université de Nantes: HAL-UNIV-NANTES
1,496
Aarhus University: Research
1,431
Informa (via Crossref)
1,374
IOP Publishing
1,179
RePEc (Research Papers in Economics)
1,173
ScienceDirect (Elsevier)
1,123
Institut national des sciences de l'Univers: HAL-INSU
1,116
University of California: eScholarship
924
Natural Environment Research Council: NERC Open Research Archive
913
Arctic Institute of North America
897
University of Copenhagen: Research
894
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
883
Canadian Science Publishing (via Crossref)
871
Informa
737
Max Planck Society: MPG.PuRe
723
Wiley Online Library (via Crossref)
722
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
633
JSTOR (via Crossref)
603
University of Bergen: Bergen Open Research Archive (BORA-UiB)
529
Lund University Publications (LUP)
480
Canadian Science Publishing
475
Oxford University Press (via Crossref)
468
Digital.CSIC (Spanish National Research Council)
467
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
440
LaCRIS - University of Lapland Current Research System
440
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
436
HELDA – University of Helsinki Open Repository
430
Frontiers (Publisher)
394
University College London: UCL Discovery
392
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
386
White Rose Research Online (Universities of Leeds, Sheffield & York)
373
Oxford University Press
372
University of Southampton: e-Prints Soton
372
University of Tromsø: Septentrio Academic Publishing
361
Institute for Marine Research: Brage IMR
360
Polar Research (E-Journal)
359
NTNU Open Archive (Norwegian University of Science and Technology)
356
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
353
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