Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
21,301
King Abdullah University of Science and Technology: KAUST Repository
658
University of Washington, Seattle: Digital Collections
251
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
173
USGS Science Data Catalog (via DataONE)
166
NOAA NCEI Environmental Data Archive (via DataONE)
148
University of Michigan: Digital Collections
94
Unknown
83
Defense Technical Information Center: DTIC Technical Reports database
76
Directory of Open Access Journals: DOAJ Articles
56
PANGAEA - Data Publisher for Earth & Environmental Science
49
The University of Utah: J. Willard Marriott Digital Library
42
University of Calgary Journal Hosting
40
Research Data Australia (Australian National Data Service - ANDS)
35
Knowledge Network for Biocomplexity (via DataONE)
34
University of North Florida (UNF): Digital Commons
33
Washington State University: WSU Libraries Digital Collections
30
Frontiers: Figshare
27
North Dakota State University (NDSU): Digital Horizons
22
Arctic Data Center (via DataONE)
20
National Institute of Polar Research Repository, Japan
20
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
19
University of Alberta: Era - Education and Research Archive
17
Cambridge University Press
16
OpenEdition
15
Wiley Online Library
15
Zenodo
15
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
14
RUcore - Rutgers University Community Repository
14
Institut national des sciences de l'Univers: HAL-INSU
13
Natural Environment Research Council: NERC Open Research Archive
13
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
13
Université de Nantes: HAL-UNIV-NANTES
13
ARPI - Archivio della Ricerca dell'Università di Pisa
12
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
11
National Library of Australia: Digital Collections
11
SFU Digitized Collections (Simon Fraser University)
11
University of Lethbridge Digitized Collections
11
University of Tasmania: UTas ePrints
11
Canadian Science Publishing (via Crossref)
10
Biodiversity Heritage Library (BHL)
9
Claremont Colleges Digital Library (CCDL)
9
MDPI Open Access Publishing
9
University of California: eScholarship
9
the Digital Archaeological Record (via DataONE)
9
DataCite
8
Florida Online Journals (FloridaOJ)
8
MacSphere (McMaster University)
8
The Library of Congress: American Memory
8
University of Copenhagen: Research
8
more ...