Content Provider
PANGAEA - Data Publisher for Earth & Environmental Science
13,115
DataCite Metadata Store (German National Library of Science and Technology)
3,531
Defense Technical Information Center: DTIC Technical Reports database
133
USGS Science Data Catalog (via DataONE)
70
Directory of Open Access Journals: DOAJ Articles
55
NOAA NCEI Environmental Data Archive (via DataONE)
54
LeibnizOpen (The Leibniz Association)
40
Research Data Australia (Australian National Data Service - ANDS)
34
Unknown
26
Arctic Data Center (via DataONE)
21
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
19
University of California: eScholarship
15
University of St Andrews: Research Portal
15
The World Bank: Open Knowledge Repository (OKR)
14
MDPI Open Access Publishing
11
Université de Nantes: HAL-UNIV-NANTES
10
Zenodo
10
ESS-DIVE: Deep Insight for Earth Science Data (via DataONE)
9
Ice and Snow (E-Journal)
9
University College London: UCL Discovery
8
HELDA – University of Helsinki Open Repository
7
Institut national des sciences de l'Univers: HAL-INSU
7
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
7
Université Grenoble Alpes: HAL
7
Aarhus University: Research
6
Frontiers: Figshare
6
IRD (Institute de recherche pour le développement): Horizon
6
Lund University Publications (LUP)
6
Université Savoie Mont Blanc: HAL
6
Science & Technology Facilities Council: ePublication Archive
5
University of North Texas: UNT Digital Library
5
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
4
CyberLeninka (Scientific Electronic Library)
4
Digital.CSIC (Spanish National Research Council)
4
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences)
4
Lund University Publications Student Papers (LUP-SP)
4
Tottori University Research Result Repository
4
University of Calgary Journal Hosting
4
Dryad Digital Repository (Duke University)
3
HAL - Université de La Rochelle
3
National Institute of Polar Research Repository, Japan
3
Natural Resources Institute Finland: Jukuri
3
University of Groningen research database
3
University of Leicester: Figshare
3
University of Leicester: Leicester Research Archive (LRA)
3
University of Tromsø: Munin Open Research Archive
3
York University Digital Library
3
Archive Ouverte de l'Université Rennes (HAL)
2
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
2
Digital Collections of Colorado (Colorado State University)
2
more ...