Content Provider
Directory of Open Access Journals: DOAJ Articles
105,984
DataCite Metadata Store (German National Library of Science and Technology)
36,358
ScienceDirect (Elsevier - via Crossref)
36,220
Springer Nature (via Crossref)
29,514
Wiley Online Library (via Crossref)
27,151
Unknown
22,461
Cambridge University Press
22,416
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
18,572
Informa (via Crossref)
16,692
Wiley Online Library
15,540
ScienceDirect (Elsevier)
11,807
Université de Nantes: HAL-UNIV-NANTES
11,607
Natural Environment Research Council: NERC Open Research Archive
10,973
Institut national des sciences de l'Univers: HAL-INSU
10,396
LeibnizOpen (The Leibniz Association)
9,686
Niedersächsisches Online-Archiv NOA
9,405
Canadian Science Publishing (via Crossref)
8,409
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
8,265
Oxford University Press (via Crossref)
7,293
University of Copenhagen: Research
6,137
University of California: eScholarship
5,982
RePEc (Research Papers in Economics)
5,871
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
5,449
Zenodo
5,173
University of Calgary Journal Hosting
5,143
Aarhus University: Research
5,086
Digital.CSIC (Spanish National Research Council)
4,999
JSTOR (via Crossref)
4,833
Arctic Institute of North America (via Crossref)
4,486
University of Tromsø: Munin Open Research Archive
4,475
HAL Sorbonne Université
4,319
eCite UTAS (University of Tasmania)
3,961
Frontiers (Publisher)
3,875
Biodiversity Heritage Library (BHL)
3,865
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
3,851
Informa
3,443
University of Southampton: e-Prints Soton
3,419
Oxford University Press
3,407
Max Planck Society: MPG.PuRe
3,401
SAGE Publications (via Crossref)
3,370
Canadian Science Publishing
3,031
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
2,847
Hirsla - Landspítali University Hospital research archive
2,833
IOP Publishing (via Crossref)
2,816
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
2,805
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
2,709
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
2,634
Technical University of Denmark: DTU Orbit
2,590
University of St Andrews: Research Portal
2,338
Caltech Authors (California Institute of Technology)
2,303
more ...