Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
26,038
PANGAEA - Data Publisher for Earth & Environmental Science
13,493
Unknown
10,489
Directory of Open Access Journals: DOAJ Articles
4,435
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
3,300
Arctic Data Center (via DataONE)
2,935
Copernicus Publications: E-Journals
2,068
Defense Technical Information Center: DTIC Technical Reports database
1,902
Zenodo
1,657
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
1,560
Research Data Australia (Australian National Data Service - ANDS)
1,507
Niedersächsisches Online-Archiv NOA
1,386
Springer Nature (via Crossref)
1,375
Institut national des sciences de l'Univers: HAL-INSU
1,189
Natural Environment Research Council: NERC Open Research Archive
1,081
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
1,054
ScienceDirect (Elsevier - via Crossref)
1,037
Université de Nantes: HAL-UNIV-NANTES
1,021
eCite UTAS (University of Tasmania)
990
IEEE Publications (via Crossref)
983
PubMed Central (PMC)
892
Wiley Online Library
875
NASA Technical Reports Server (NTRS)
854
LeibnizOpen (The Leibniz Association)
813
NOAA NCEI Environmental Data Archive (via DataONE)
789
Cambridge University Press
667
MDPI Open Access Publishing
662
HAL Sorbonne Université
619
National Institute of Polar Research Repository, Japan
573
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
567
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
553
Wiley Online Library (via Crossref)
545
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
538
University of Tromsø: Munin Open Research Archive
532
University of California: eScholarship
520
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
508
Max Planck Society: MPG.PuRe
489
University of Tasmania: UTas ePrints
489
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
412
Aarhus University: Research
408
DIAL@USL-B (Université Saint-Louis, Bruxelles)
401
École Polytechnique, Université Paris-Saclay: HAL
395
Frontiers: Figshare
386
DIAL@UCLouvain (Université catholique de Louvain)
377
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
374
ScienceDirect (Elsevier)
372
Archives ouvertes de Paris-Saclay
368
Muséum National d'Histoire Naturelle (MNHM): HAL
360
Digital.CSIC (Spanish National Research Council)
356
Knowledge Network for Biocomplexity (via DataONE)
355
more ...