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
22,654
Wiley Online Library (via Crossref)
22,475
Unknown
22,436
Wiley Online Library
21,054
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
18,572
Informa (via Crossref)
15,071
ScienceDirect (Elsevier)
11,807
Université de Nantes: HAL-UNIV-NANTES
11,611
Natural Environment Research Council: NERC Open Research Archive
11,008
Institut national des sciences de l'Univers: HAL-INSU
10,494
LeibnizOpen (The Leibniz Association)
9,686
Niedersächsisches Online-Archiv NOA
9,623
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
8,312
Canadian Science Publishing (via Crossref)
7,462
Oxford University Press (via Crossref)
6,388
University of Copenhagen: Research
6,229
RePEc (Research Papers in Economics)
6,197
University of California: eScholarship
6,022
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
5,464
Aarhus University: Research
5,184
Zenodo
5,173
Informa
5,161
University of Calgary Journal Hosting
5,144
Digital.CSIC (Spanish National Research Council)
5,031
JSTOR (via Crossref)
4,719
University of Tromsø: Munin Open Research Archive
4,504
Oxford University Press
4,381
HAL Sorbonne Université
4,368
Arctic Institute of North America (via Crossref)
4,319
Canadian Science Publishing
3,989
eCite UTAS (University of Tasmania)
3,961
Frontiers (Publisher)
3,935
Biodiversity Heritage Library (BHL)
3,895
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
3,878
Max Planck Society: MPG.PuRe
3,426
University of Southampton: e-Prints Soton
3,425
SAGE Publications (via Crossref)
2,916
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
2,876
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)
2,737
IOP Publishing (via Crossref)
2,667
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
2,640
Technical University of Denmark: DTU Orbit
2,620
University of St Andrews: Research Portal
2,402
Caltech Authors (California Institute of Technology)
2,303
more ...