Content Provider
Directory of Open Access Journals: DOAJ Articles
854
DataCite Metadata Store (German National Library of Science and Technology)
267
Unknown
265
University of Calgary Journal Hosting
260
Wiley Online Library (via Crossref)
237
Wiley Online Library
193
University of California: eScholarship
191
Informa (via Crossref)
168
Springer Nature (via Crossref)
151
Aarhus University: Research
147
Canadian Science Publishing (via Crossref)
126
University of Copenhagen: Research
126
Niedersächsisches Online-Archiv NOA
125
Lund University Publications (LUP)
124
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
123
University of Tromsø: Munin Open Research Archive
114
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
113
ScienceDirect (Elsevier - via Crossref)
96
Wageningen UR (University & Research Centre): Digital Library
89
Université de Nantes: HAL-UNIV-NANTES
80
Informa
74
Arctic Institute of North America (via Crossref)
69
HELDA – University of Helsinki Open Repository
67
Dryad Digital Repository (Duke University)
62
Max Planck Society: MPG.PuRe
60
Cambridge University Press
59
University of Groningen research database
57
Canadian Science Publishing
52
LaCRIS - University of Lapland Current Research System
50
Jultika - University of Oulu repository
49
Umeå University: Publications (DiVA)
46
LeibnizOpen (The Leibniz Association)
42
RePEc (Research Papers in Economics)
40
Institut national des sciences de l'Univers: HAL-INSU
37
University of Stirling: Stirling Digital Research Repository
35
Zenodo
35
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
34
Natural Environment Research Council: NERC Open Research Archive
32
NTNU Open Archive (Norwegian University of Science and Technology)
31
Vrije Universiteit Amsterdam (VU): Research Portal
31
IOP Publishing
30
NORA (National aggregator of open repositories of Russian universities)
30
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
27
IOP Publishing (via Crossref)
27
Polar Research (E-Journal)
27
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
26
University of Bergen: Bergen Open Research Archive (BORA-UiB)
26
University of Potsdam: publish.UP
26
Carleton University's Institutional Repository
25
Norwegian Institute for Nature Research: Brage NINA
25
more ...