Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
76,154
PANGAEA - Data Publisher for Earth & Environmental Science
9,877
Unknown
7,957
Directory of Open Access Journals: DOAJ Articles
6,842
Natural Environment Research Council: NERC Open Research Archive
5,860
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)
4,041
Cambridge University Press
3,462
ScienceDirect (Elsevier - via Crossref)
3,395
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
2,213
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)
1,170
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
778
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
JSTOR (via Crossref)
528
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
527
ArXiv.org (Cornell University Library)
500
Oxford University Press (via Crossref)
491
AU Digital Research Archive (American University)
474
more ...