Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
3,149
Directory of Open Access Journals: DOAJ Articles
1,281
Unknown
1,213
Research Data Australia (Australian National Data Service - ANDS)
934
Natural Environment Research Council: NERC Open Research Archive
925
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
511
LeibnizOpen (The Leibniz Association)
507
IEDA: Marine-Geo Digital Library (via DataONE)
502
Cambridge University Press
460
Copernicus Publications: E-Journals
441
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
436
PANGAEA - Data Publisher for Earth & Environmental Science
399
eCite UTAS (University of Tasmania)
372
Zenodo
328
University of Tasmania: UTas ePrints
320
National Institute of Polar Research Repository, Japan
307
PubMed Central (PMC)
306
Université de Nantes: HAL-UNIV-NANTES
305
Niedersächsisches Online-Archiv NOA
294
University of Canterbury, Christchurch: UC Research Repository
262
Digital.CSIC (Spanish National Research Council)
215
MDPI Open Access Publishing
215
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
209
Frontiers: Figshare
189
University of California: eScholarship
170
NASA Technical Reports Server (NTRS)
166
Wiley Online Library (via Crossref)
133
Arctic Data Center (via DataONE)
132
Utrecht University Repository
124
Institut national des sciences de l'Univers: HAL-INSU
123
Australian National University: ANU Digital Collections
120
Springer Nature (via Crossref)
113
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
108
Ohio State University (OSU): Knowledge Bank
101
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
89
University of Southampton: e-Prints Soton
88
Wiley Online Library
85
Earth-Prints (Istituto Nazionale di Geofisica e Vulcanologia)
84
Defense Technical Information Center: DTIC Technical Reports database
83
Università degli Studi di Siena: USiena air
77
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
76
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
74
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
74
HighWire Press (Stanford University)
73
IEDA: US Antarctic Program Data Center (via DataONE)
73
National Library of Australia: Digital Collections
67
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
63
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
60
Apollo - University of Cambridge Repository
58
Magnolia press
58
more ...