Content Provider
Directory of Open Access Journals: DOAJ Articles
2,171
Unknown
678
Wiley Online Library
562
DataCite Metadata Store (German National Library of Science and Technology)
529
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
338
Aarhus University: Research
309
Niedersächsisches Online-Archiv NOA
256
LeibnizOpen (The Leibniz Association)
245
University of Tromsø: Munin Open Research Archive
240
Université de Nantes: HAL-UNIV-NANTES
224
Institut national des sciences de l'Univers: HAL-INSU
211
Springer Nature (via Crossref)
208
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
205
University of California: eScholarship
201
University of Copenhagen: Research
192
Wiley Online Library (via Crossref)
192
RePEc (Research Papers in Economics)
191
University of Calgary Journal Hosting
191
HELDA – University of Helsinki Open Repository
128
Natural Environment Research Council: NERC Open Research Archive
117
Lund University Publications (LUP)
113
Frontiers (Publisher)
109
Zenodo
108
Wageningen UR (University & Research Centre): Digital Library
107
Cambridge University Press
100
LaCRIS - University of Lapland Current Research System
93
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
91
HAL Sorbonne Université
89
Dryad Digital Repository (Duke University)
84
White Rose Research Online (Universities of Leeds, Sheffield & York)
80
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
79
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
75
Digital.CSIC (Spanish National Research Council)
74
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
72
Max Planck Society: MPG.PuRe
71
Jultika - University of Oulu repository
70
Umeå University: Publications (DiVA)
70
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
70
Vrije Universiteit Amsterdam (VU): Research Portal
69
Institute for Marine Research: Brage IMR
68
IOP Publishing
67
Polar Research (E-Journal)
67
Canadian Science Publishing (via Crossref)
66
ScienceDirect (Elsevier - via Crossref)
65
IOP Publishing (via Crossref)
64
University of Groningen research database
63
Archives ouvertes de Paris-Saclay
62
Canadian Science Publishing
62
University College London: UCL Discovery
60
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
58
more ...