Content Provider
Directory of Open Access Journals: DOAJ Articles
116,371
Wiley Online Library
41,443
DataCite Metadata Store (German National Library of Science and Technology)
33,272
Springer Nature (via Crossref)
29,514
ScienceDirect (Elsevier - via Crossref)
28,837
Cambridge University Press
23,120
Unknown
22,250
ScienceDirect (Elsevier)
19,718
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
18,572
Université de Nantes: HAL-UNIV-NANTES
11,627
Natural Environment Research Council: NERC Open Research Archive
11,115
DataCite
11,063
Informa (via Crossref)
10,981
Institut national des sciences de l'Univers: HAL-INSU
10,729
LeibnizOpen (The Leibniz Association)
10,169
Niedersächsisches Online-Archiv NOA
9,807
Informa
9,565
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
8,582
Canadian Science Publishing
6,416
Oxford University Press
6,351
University of Copenhagen: Research
6,340
University of California: eScholarship
6,235
RePEc (Research Papers in Economics)
6,197
Zenodo
6,105
Wiley Online Library (via Crossref)
5,993
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
5,517
Aarhus University: Research
5,351
Digital.CSIC (Spanish National Research Council)
5,240
University of Calgary Journal Hosting
5,164
Canadian Science Publishing (via Crossref)
5,107
Arctic Institute of North America
4,887
University of St Andrews: Research Portal
4,782
Oxford University Press (via Crossref)
4,626
University of Tromsø: Munin Open Research Archive
4,586
HAL Sorbonne Université
4,516
Biodiversity Heritage Library (BHL)
4,362
Frontiers (Publisher)
4,095
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
3,978
eCite UTAS (University of Tasmania)
3,961
IOP Publishing
3,674
JSTOR (via Crossref)
3,578
Max Planck Society: MPG.PuRe
3,486
University of Southampton: e-Prints Soton
3,469
SAGE Publications
3,122
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
2,925
Hirsla - Landspítali University Hospital research archive
2,833
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
2,805
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
2,788
Technical University of Denmark: DTU Orbit
2,753
The Royal Society
2,719
more ...