Content Provider
Directory of Open Access Journals: DOAJ Articles
105,984
DataCite Metadata Store (German National Library of Science and Technology)
38,128
ScienceDirect (Elsevier - via Crossref)
36,220
Springer Nature (via Crossref)
29,514
Cambridge University Press
22,575
Wiley Online Library (via Crossref)
22,507
Unknown
22,439
Wiley Online Library
21,012
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
18,572
Informa (via Crossref)
15,471
ScienceDirect (Elsevier)
11,807
Université de Nantes: HAL-UNIV-NANTES
11,610
Natural Environment Research Council: NERC Open Research Archive
10,997
Institut national des sciences de l'Univers: HAL-INSU
10,493
LeibnizOpen (The Leibniz Association)
9,686
Niedersächsisches Online-Archiv NOA
9,597
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
8,295
Canadian Science Publishing (via Crossref)
7,701
Oxford University Press (via Crossref)
6,605
University of Copenhagen: Research
6,220
RePEc (Research Papers in Economics)
6,197
University of California: eScholarship
6,017
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
5,461
Zenodo
5,173
Aarhus University: Research
5,172
University of Calgary Journal Hosting
5,144
Digital.CSIC (Spanish National Research Council)
5,020
JSTOR (via Crossref)
4,752
Informa
4,723
University of Tromsø: Munin Open Research Archive
4,498
Arctic Institute of North America (via Crossref)
4,409
HAL Sorbonne Université
4,352
Oxford University Press
4,134
eCite UTAS (University of Tasmania)
3,961
Frontiers (Publisher)
3,915
Biodiversity Heritage Library (BHL)
3,895
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
3,873
Canadian Science Publishing
3,745
University of Southampton: e-Prints Soton
3,423
Max Planck Society: MPG.PuRe
3,416
SAGE Publications (via Crossref)
3,009
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
2,874
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)
2,735
IOP Publishing (via Crossref)
2,712
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
2,634
Technical University of Denmark: DTU Orbit
2,616
University of St Andrews: Research Portal
2,394
Caltech Authors (California Institute of Technology)
2,303
more ...