Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
26,264
PANGAEA - Data Publisher for Earth & Environmental Science
9,259
DataCite
6,217
Directory of Open Access Journals: DOAJ Articles
5,986
Research Data Australia (Australian National Data Service - ANDS)
5,650
Unknown
5,476
Zenodo
4,296
Natural Environment Research Council: NERC Open Research Archive
3,095
Wiley Online Library
2,942
Springer Nature (via Crossref)
2,783
National Institute of Polar Research Repository, Japan
2,736
Cambridge University Press
2,570
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
2,484
ScienceDirect (Elsevier - via Crossref)
2,481
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)
1,860
Copernicus Publications: E-Journals
1,648
eCite UTAS (University of Tasmania)
1,637
Université de Nantes: HAL-UNIV-NANTES
1,582
Institut national des sciences de l'Univers: HAL-INSU
1,505
LeibnizOpen (The Leibniz Association)
1,423
AU Digital Research Archive (American University)
1,330
ScienceDirect (Elsevier)
1,248
National Library of Australia: Digital Collections
1,088
Niedersächsisches Online-Archiv NOA
1,071
David Rumsey Historical Map Collection (Cartography Associates)
1,053
Biodiversity Heritage Library (BHL)
990
University of Tasmania: UTas ePrints
940
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
927
MDPI Open Access Publishing
905
Digital.CSIC (Spanish National Research Council)
866
University of California: eScholarship
850
NASA Technical Reports Server (NTRS)
757
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
697
Informa
692
Australian National University: ANU Digital Collections
665
Frontiers: Figshare
648
IEDA: US Antarctic Program Data Center (via DataONE)
647
Informa (via Crossref)
644
Université Grenoble Alpes: HAL
559
University of Canterbury, Christchurch: UC Research Repository
551
Ohio State University (OSU): Knowledge Bank
517
Oxford University Press
490
HAL Sorbonne Université
482
WikiBooks - Open-content textbooks
478
Dryad Digital Repository (Duke University)
467
Defense Technical Information Center: DTIC Technical Reports database
436
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
433
Università degli Studi di Siena: USiena air
426
more ...