Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
12,524
PANGAEA - Data Publisher for Earth & Environmental Science
9,877
Directory of Open Access Journals: DOAJ Articles
6,718
Unknown
6,647
Springer Nature (via Crossref)
3,888
Cambridge University Press
3,290
ScienceDirect (Elsevier - via Crossref)
3,288
Ohio State University (OSU): Knowledge Bank
3,280
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
2,892
eCite UTAS (University of Tasmania)
2,572
PubMed Central (PMC)
2,443
National Institute of Polar Research Repository, Japan
2,354
Natural Environment Research Council: NERC Open Research Archive
2,145
Université de Nantes: HAL-UNIV-NANTES
2,077
Copernicus Publications: E-Journals
1,966
Wiley Online Library (via Crossref)
1,407
LeibnizOpen (The Leibniz Association)
1,340
Niedersächsisches Online-Archiv NOA
1,333
ScienceDirect (Elsevier)
1,144
University of Tasmania: UTas ePrints
1,048
Informa (via Crossref)
969
Institut national des sciences de l'Univers: HAL-INSU
932
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
929
MDPI Open Access Publishing
911
Defense Technical Information Center: DTIC Technical Reports database
834
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
761
Wiley Online Library
742
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
650
Digital.CSIC (Spanish National Research Council)
630
University of Canterbury, Christchurch: UC Research Repository
610
HighWire Press (Stanford University)
580
University of Southampton: e-Prints Soton
519
Zenodo
516
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
515
DI-fusion : dépôt institutionnel de l'Université libre de Bruxelles (ULB)
427
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
399
Università degli Studi di Genova: CINECA IRIS
396
HAL Sorbonne Université
382
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
378
Utrecht University Repository
374
The University of Queensland: UQ eSpace
364
Université Grenoble Alpes: HAL
343
University of California: eScholarship
342
Oxford University Press (via Crossref)
309
Magnolia press
295
University of St Andrews: Research Portal
291
Apollo - University of Cambridge Repository
283
Ghent University Academic Bibliography
281
Max Planck Society: MPG.PuRe
277
DIAL@USL-B (Université Saint-Louis, Bruxelles)
260
more ...