Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
3,052
Arctic Data Center (via DataONE)
2,389
Zenodo
905
Dryad Digital Repository (Duke University)
668
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
551
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
535
CyberLeninka (Scientific Electronic Library)
393
Oregon Digital (University of Oregon/Oregon State University)
359
Unknown
320
University of California: eScholarship
239
ESS-DIVE: Deep Insight for Earth Science Data (via DataONE)
171
University of Michigan: Digital Collections
169
OLAC: Open Language Archives Community
168
Springer Nature (via Crossref)
124
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
114
RePEc (Research Papers in Economics)
110
Informa (via Crossref)
108
IOP Publishing
104
Wiley Online Library
103
NASA Technical Reports Server (NTRS)
98
University of Nebraska-Lincoln: DigitalCommons@UNL
96
The University of Utah: J. Willard Marriott Digital Library
89
Frontiers: Figshare
87
Knowledge Network for Biocomplexity (via DataONE)
85
ORNL DAAC (via DataONE)
82
Oxford University Press (via Crossref)
81
JSTOR (via Crossref)
78
Max Planck Society: MPG.PuRe
71
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
68
IOP Publishing (via Crossref)
68
TERN Australia (via DataONE)
68
Arctic Institute of North America (via Crossref)
64
North Dakota State University (NDSU): Digital Horizons
63
Springer Nature
57
Frontiers (Publisher)
55
Northwest Institute of Plateau Biology: NWIPB OpenIR (Chinese Academy of Sciences)
55
Research Data Australia (Australian National Data Service - ANDS)
52
Natural Environment Research Council: NERC Open Research Archive
50
NORA (National aggregator of open repositories of Russian universities)
49
IEEE Publications (via Crossref)
44
Informa
44
University of Alaska: ScholarWorks@UA
43
Utah State University: DigitalCommons@USU
41
ScholarsArchive@OSU (Oregon State University)
40
University of Washington, Seattle: Digital Collections
39
Kazan Federal University Digital Repository
38
F1000Research
36
Biodiversity Heritage Library (BHL)
35
University of Montana: ScholarWorks
35
Environmental Protection Agency (EPA): Science Inventory
32
more ...