Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
8,120
Research Data Australia (Australian National Data Service - ANDS)
758
IEDA: Marine-Geo Digital Library (via DataONE)
188
Unknown
113
Directory of Open Access Journals: DOAJ Articles
108
PANGAEA - Data Publisher for Earth & Environmental Science
84
DigiTool Collections - The University of Auckland
79
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
77
Wiley Online Library
74
Natural Environment Research Council: NERC Open Research Archive
73
Zenodo
73
Université de Nantes: HAL-UNIV-NANTES
71
Cambridge University Press
60
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
58
PubMed Central (PMC)
51
HAL - Université de La Rochelle
42
National Library of Australia: Digital Collections
34
WikiBooks - Open-content textbooks
32
Digital.CSIC (Spanish National Research Council)
31
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
25
Springer Nature (via Crossref)
24
eCite UTAS (University of Tasmania)
24
Institut national des sciences de l'Univers: HAL-INSU
23
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
22
California State University (CSU): DSpace
22
IEDA: US Antarctic Program Data Center (via DataONE)
21
LeibnizOpen (The Leibniz Association)
21
National Institute of Polar Research Repository, Japan
18
HighWire Press (Stanford University)
17
University of Canterbury, Christchurch: UC Research Repository
17
Wageningen UR (University & Research Centre): Digital Library
17
Biodiversity Heritage Library (BHL)
16
Digital Commons University of South Florida (USF)
16
Universidad Nacional de La Plata (UNLP): SeDiCI (Servicio de Difusión de la Creación Intelectual)
16
Dryad Digital Repository (Duke University)
15
University of Michigan: Digital Collections
14
HAL-IN2P3 (Institut national de physique nucléaire et de physique des particules)
13
AU Digital Research Archive (American University)
12
Oxford University Press (via Crossref)
12
Illinois State Library: Illinois Digital Archives
11
MDPI Open Access Publishing
11
Murdoch University: Murdoch Research Repository
11
NOAA NCEI Environmental Data Archive (via DataONE)
11
Oxford University Press
11
Università degli Studi di Siena: USiena air
11
University of Tasmania: UTas ePrints
10
HAL Sorbonne Université
9
Knowledge Network for Biocomplexity (via DataONE)
9
Macquarie University Research Portal
9
Muséum National d'Histoire Naturelle (MNHM): HAL
9
more ...