Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
76,154
PANGAEA - Data Publisher for Earth & Environmental Science
9,813
Unknown
7,956
Directory of Open Access Journals: DOAJ Articles
6,842
Natural Environment Research Council: NERC Open Research Archive
5,856
Research Data Australia (Australian National Data Service - ANDS)
5,430
Springer Nature (via Crossref)
4,764
Zenodo
4,368
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
4,040
ScienceDirect (Elsevier - via Crossref)
3,395
Cambridge University Press
3,382
Ohio State University (OSU): Knowledge Bank
3,282
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
3,065
National Institute of Polar Research Repository, Japan
2,995
eCite UTAS (University of Tasmania)
2,572
PubMed Central (PMC)
2,443
Université de Nantes: HAL-UNIV-NANTES
2,209
Copernicus Publications: E-Journals
1,966
Wiley Online Library (via Crossref)
1,730
LeibnizOpen (The Leibniz Association)
1,418
University of Tasmania: UTas ePrints
1,390
Niedersächsisches Online-Archiv NOA
1,333
NASA Technical Reports Server (NTRS)
1,295
Digital.CSIC (Spanish National Research Council)
1,259
ScienceDirect (Elsevier)
1,247
Informa (via Crossref)
1,141
Wiley Online Library
1,046
University of California: eScholarship
998
Institut national des sciences de l'Univers: HAL-INSU
978
National Library of Australia: Digital Collections
976
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
973
IEDA: Marine-Geo Digital Library (via DataONE)
932
MDPI Open Access Publishing
911
Frontiers: Figshare
882
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
856
Defense Technical Information Center: DTIC Technical Reports database
834
University of Southampton: e-Prints Soton
771
IEDA: US Antarctic Program Data Center (via DataONE)
695
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
659
University of Canterbury, Christchurch: UC Research Repository
610
Australian National University: ANU Digital Collections
607
Arctic Data Center (via DataONE)
588
HighWire Press (Stanford University)
580
The University of Melbourne: Digitised Collections
541
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
538
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
527
JSTOR (via Crossref)
524
ArXiv.org (Cornell University Library)
500
Oxford University Press (via Crossref)
484
AU Digital Research Archive (American University)
474
more ...