Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
30,683
PANGAEA - Data Publisher for Earth & Environmental Science
8,988
Research Data Australia (Australian National Data Service - ANDS)
5,620
Directory of Open Access Journals: DOAJ Articles
5,566
Unknown
5,496
Zenodo
3,230
Natural Environment Research Council: NERC Open Research Archive
3,058
ScienceDirect (Elsevier - via Crossref)
2,960
Springer Nature (via Crossref)
2,783
National Institute of Polar Research Repository, Japan
2,736
Cambridge University Press
2,521
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
2,474
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2,212
IEDA: Marine-Geo Digital Library (via DataONE)
1,917
PubMed Central (PMC)
1,707
eCite UTAS (University of Tasmania)
1,637
Université de Nantes: HAL-UNIV-NANTES
1,581
Wiley Online Library
1,512
Copernicus Publications: E-Journals
1,506
Institut national des sciences de l'Univers: HAL-INSU
1,477
LeibnizOpen (The Leibniz Association)
1,351
Wiley Online Library (via Crossref)
1,343
AU Digital Research Archive (American University)
1,330
National Library of Australia: Digital Collections
1,088
Informa (via Crossref)
1,062
Niedersächsisches Online-Archiv NOA
1,050
David Rumsey Historical Map Collection (Cartography Associates)
1,046
Biodiversity Heritage Library (BHL)
965
University of Tasmania: UTas ePrints
939
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
910
MDPI Open Access Publishing
905
Digital.CSIC (Spanish National Research Council)
839
University of California: eScholarship
812
NASA Technical Reports Server (NTRS)
757
ScienceDirect (Elsevier)
734
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
693
Australian National University: ANU Digital Collections
665
IEDA: US Antarctic Program Data Center (via DataONE)
647
Frontiers: Figshare
615
Université Grenoble Alpes: HAL
548
University of Canterbury, Christchurch: UC Research Repository
544
Ohio State University (OSU): Knowledge Bank
513
Dryad Digital Repository (Duke University)
467
HAL Sorbonne Université
453
Defense Technical Information Center: DTIC Technical Reports database
436
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
433
Oxford University Press (via Crossref)
429
Università degli Studi di Siena: USiena air
419
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
418
Università degli Studi di Genova: CINECA IRIS
414
more ...