Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
1,223
DataCite
932
Directory of Open Access Journals: DOAJ Articles
882
DataCite Metadata Store (German National Library of Science and Technology)
803
Unknown
621
Natural Environment Research Council: NERC Open Research Archive
528
Cambridge University Press
456
Wiley Online Library
300
ScienceDirect (Elsevier - via Crossref)
299
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
286
Springer Nature (via Crossref)
280
PubMed Central (PMC)
274
Copernicus Publications: E-Journals
225
ScienceDirect (Elsevier)
221
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
188
Open Parks Network
178
Niedersächsisches Online-Archiv NOA
145
Digital.CSIC (Spanish National Research Council)
141
MDPI Open Access Publishing
117
Université de Nantes: HAL-UNIV-NANTES
115
Institut national des sciences de l'Univers: HAL-INSU
113
eCite UTAS (University of Tasmania)
107
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
101
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
89
LeibnizOpen (The Leibniz Association)
87
University of Southampton: e-Prints Soton
85
Utrecht University Repository
78
National Institute of Polar Research Repository, Japan
71
University of Alberta: Era - Education and Research Archive
68
HighWire Press (Stanford University)
65
Zenodo
60
Oxford University Press
58
The Royal Society
58
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
56
Ghent University Academic Bibliography
55
HAL Sorbonne Université
54
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
54
Apollo - University of Cambridge Repository
51
University of California: eScholarship
51
University of Groningen research database
50
University of Bristol: Bristol Research
49
University of Freiburg: FreiDok
49
University of Tasmania: UTas ePrints
48
University of Liège: ORBi (Open Repository and Bibliography)
47
Universidad de Chile: Repositorio académico
46
White Rose Research Online (Universities of Leeds, Sheffield & York)
44
University of St Andrews: Research Portal
40
University of the Highlands and Islands: Research Database of UHI
36
University of East Anglia: UEA Digital Repository
35
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
34
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