Content Provider
Directory of Open Access Journals: DOAJ Articles
3,044
DataCite Metadata Store (German National Library of Science and Technology)
3,035
Unknown
2,957
Cambridge University Press
1,409
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1,210
PANGAEA - Data Publisher for Earth & Environmental Science
1,183
Copernicus Publications: E-Journals
1,055
Springer Nature (via Crossref)
1,025
Natural Environment Research Council: NERC Open Research Archive
1,008
PubMed Central (PMC)
993
eCite UTAS (University of Tasmania)
946
ScienceDirect (Elsevier - via Crossref)
839
Université de Nantes: HAL-UNIV-NANTES
821
National Institute of Polar Research Repository, Japan
813
LeibnizOpen (The Leibniz Association)
798
Niedersächsisches Online-Archiv NOA
726
Wiley Online Library (via Crossref)
492
University of Tasmania: UTas ePrints
469
MDPI Open Access Publishing
450
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
416
Institut national des sciences de l'Univers: HAL-INSU
410
University of Canterbury, Christchurch: UC Research Repository
390
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
370
ScienceDirect (Elsevier)
313
Wiley Online Library
305
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
292
HighWire Press (Stanford University)
274
Digital.CSIC (Spanish National Research Council)
267
Defense Technical Information Center: DTIC Technical Reports database
266
Informa (via Crossref)
261
Zenodo
251
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
239
University of Southampton: e-Prints Soton
236
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
224
Utrecht University Repository
208
HAL Sorbonne Université
188
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
178
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
146
The University of Queensland: UQ eSpace
141
University of California: eScholarship
139
DIAL@USL-B (Université Saint-Louis, Bruxelles)
138
Université Grenoble Alpes: HAL
136
Magnolia press
135
Università degli Studi di Genova: CINECA IRIS
135
Max Planck Society: MPG.PuRe
132
The Royal Society (via Crossref)
129
Cambridge University Press (via Crossref)
126
Apollo - University of Cambridge Repository
125
Oxford University Press (via Crossref)
122
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
120
more ...