Content Provider
Directory of Open Access Journals: DOAJ Articles
3,019
Unknown
2,953
DataCite Metadata Store (German National Library of Science and Technology)
1,595
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1,210
Cambridge University Press
1,058
Springer Nature (via Crossref)
1,025
Copernicus Publications: E-Journals
1,015
Natural Environment Research Council: NERC Open Research Archive
1,011
PubMed Central (PMC)
1,005
eCite UTAS (University of Tasmania)
946
Université de Nantes: HAL-UNIV-NANTES
821
National Institute of Polar Research Repository, Japan
813
LeibnizOpen (The Leibniz Association)
798
ScienceDirect (Elsevier - via Crossref)
691
Niedersächsisches Online-Archiv NOA
656
PANGAEA - Data Publisher for Earth & Environmental Science
580
Wiley Online Library
515
University of Tasmania: UTas ePrints
469
MDPI Open Access Publishing
450
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
421
Institut national des sciences de l'Univers: HAL-INSU
409
University of Canterbury, Christchurch: UC Research Repository
390
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
323
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
292
ScienceDirect (Elsevier)
279
Digital.CSIC (Spanish National Research Council)
274
HighWire Press (Stanford University)
274
Defense Technical Information Center: DTIC Technical Reports database
266
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
244
University of Southampton: e-Prints Soton
241
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
227
Utrecht University Repository
211
Informa (via Crossref)
177
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
176
Université Grenoble Alpes: HAL
159
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
146
University of St Andrews: Research Portal
142
The University of Queensland: UQ eSpace
141
DIAL@USL-B (Université Saint-Louis, Bruxelles)
139
Magnolia press
136
Università degli Studi di Genova: CINECA IRIS
136
University of California: eScholarship
133
Apollo - University of Cambridge Repository
125
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
120
Ohio State University (OSU): Knowledge Bank
119
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
117
Max Planck Society: MPG.PuRe
115
IRIS Università degli Studi di Napoli Federico II
114
Università degli Studi di Siena: USiena air
113
White Rose Research Online (Universities of Leeds, Sheffield & York)
107
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