Content Provider
Directory of Open Access Journals: DOAJ Articles
3,661
DataCite Metadata Store (German National Library of Science and Technology)
2,392
Canadian Science Publishing (via Crossref)
1,428
Unknown
1,377
Wiley Online Library (via Crossref)
968
University of Calgary Journal Hosting
959
Cambridge University Press
916
ScienceDirect (Elsevier - via Crossref)
882
Wiley Online Library
788
RePEc (Research Papers in Economics)
643
Springer Nature (via Crossref)
643
Informa (via Crossref)
602
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
463
Canadian Science Publishing
398
Niedersächsisches Online-Archiv NOA
351
SAGE Publications (via Crossref)
303
Arctic Institute of North America (via Crossref)
300
Cambridge University Press (via Crossref)
277
University of Toronto: Research Repository T-Space
266
Université de Nantes: HAL-UNIV-NANTES
260
ScienceDirect (Elsevier)
255
National Research Council Canada: NRC Publications Archive
237
LeibnizOpen (The Leibniz Association)
223
Oxford University Press (via Crossref)
212
Biodiversity Heritage Library (BHL)
207
University of California: eScholarship
198
University of New Brunswick: Centre for Digital Scholarship Journals
190
Carleton University's Institutional Repository
182
Institut national des sciences de l'Univers: HAL-INSU
182
Dryad Digital Repository (Duke University)
172
JSTOR (via Crossref)
154
Institut national de la recherche scientifique, Québec: Espace INRS
152
University of Tromsø: Septentrio Academic Publishing
150
Aarhus University: Research
144
Informa
142
Memorial University of Newfoundland: Research Repository
140
Zenodo
139
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
135
The Canadian Field-Naturalist (E-Journal)
133
University of Victoria (Canada): UVicDSpace
115
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
114
Digital.CSIC (Spanish National Research Council)
113
Magnolia press
112
Frontiers (Publisher)
103
OpenEdition
103
UNESDOC - UNESCO Digital Library
96
Oxford University Press
91
University of St Andrews: Research Portal
88
White Rose Research Online (Universities of Leeds, Sheffield & York)
88
Indiana University: Digital Library of the Commons (DLC)
87
more ...