Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
1,019
Zenodo
62
Cambridge University Press
35
Unknown
31
Natural Environment Research Council: NERC Open Research Archive
27
Directory of Open Access Journals: DOAJ Articles
24
PANGAEA - Data Publisher for Earth & Environmental Science
19
University of Cape Town: Figshare
17
Dryad Digital Repository (Duke University)
16
University of Pretoria: UPSpace
16
The University of Utah: J. Willard Marriott Digital Library
15
Saint Louis University Libraries Digital Collections
12
Springer Nature (via Crossref)
11
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
10
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
10
University of the Highlands and Islands: Research Database of UHI
10
Digital.CSIC (Spanish National Research Council)
9
Magnolia press
9
GFZ Data Services (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
8
University of Cape Town: OpenUCT
8
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
7
Frontiers: Figshare
7
University of Tasmania: UTas ePrints
7
eCite UTAS (University of Tasmania)
7
Charles University CU Digital repository
6
David Rumsey Historical Map Collection (Cartography Associates)
6
Digital Commons University of South Florida (USF)
6
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
6
Lund University Publications (LUP)
6
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
6
Natural History Museum Repository
6
Rhodes University Cory: Repository
6
SEALS Digital Commons (South East Academic Libraries System, South Africa)
6
University of Lethbridge Digitized Collections
6
Université de Nantes: HAL-UNIV-NANTES
6
WikiBooks - Open-content textbooks
6
Frontiers (Publisher)
5
Naturalis Digital Academic Repository (National Museum of Natural History in the Netherlands)
5
Naturalis Institutional Repository
5
Wiley Online Library
5
Wiley Online Library (via Crossref)
5
Biodiversity Heritage Library (BHL)
4
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
4
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
4
Knowledge Network for Biocomplexity (via DataONE)
4
National Library of Australia: Digital Collections
4
New York Heritage Digital Collections
4
Oxford University Press
4
Oxford University Press (via Crossref)
4
PubMed Central (PMC)
4
more ...