Content Provider
Cambridge University Press
8,460
DataCite Metadata Store (German National Library of Science and Technology)
7,982
Wiley Online Library
4,207
Directory of Open Access Journals: DOAJ Articles
4,068
Unknown
2,616
Wiley Online Library (via Crossref)
2,282
Springer Nature (via Crossref)
2,168
Oxford University Press (via Crossref)
1,679
Oxford University Press
1,613
ScienceDirect (Elsevier - via Crossref)
1,294
eCite UTAS (University of Tasmania)
751
The Royal Society: Figshare
629
University of California: eScholarship
565
Informa (via Crossref)
564
SAGE Publications
454
Lund University Publications (LUP)
442
JSTOR (via Crossref)
423
Frontiers: Figshare
359
SAGE Publications (via Crossref)
359
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
349
ASM Journals (American Society for Microbiology)
347
DRO - Deakin Research Online
342
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive
324
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
298
Canadian Science Publishing (via Crossref)
287
Umeå University: Publications (DiVA)
267
De Gruyter (via Crossref)
255
Frontiers (Publisher)
234
Universidad de Salamanca: Gredos (Gestión del Repositorio Documental de la Universidad de Salamanca)
224
Informa
218
Canadian Science Publishing
173
ASM Journals (American Society for Microbiology - via Crossref)
172
Defense Technical Information Center: DTIC Technical Reports database
172
LeibnizOpen (The Leibniz Association)
159
PubMed Central (PMC)
150
University of Alaska: ScholarWorks@UA
131
Sciendo (de Gruyter - via CrossRef)
130
KovsieScholar Repository (University of the Free State - UFS UV)
127
Arctic Data Center (via DataONE)
121
University of California Press (via Crossref)
121
JSTOR
120
University of California Press
120
The University of Queensland: UQ eSpace
118
York University, Toronto: YorkSpace
101
Queen's University Belfast Research Portal
100
Brill (via Crossref)
93
Uppsala University: Publications (DiVA)
86
Cambridge University Press (via Crossref)
82
Purdue University: e-Pubs
77
Dryad Digital Repository (Duke University)
71
more ...