Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
4,833
Unknown
2,295
Directory of Open Access Journals: DOAJ Articles
2,171
Arctic Data Center (via DataONE)
1,544
Wiley Online Library
796
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
645
PubMed Central (PMC)
531
Zenodo
506
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
480
LeibnizOpen (The Leibniz Association)
412
Copernicus Publications: E-Journals
407
Aarhus University: Research
385
MDPI Open Access Publishing
369
Frontiers: Figshare
347
University of Tromsø: Munin Open Research Archive
344
Université de Nantes: HAL-UNIV-NANTES
331
Institut national des sciences de l'Univers: HAL-INSU
297
Niedersächsisches Online-Archiv NOA
261
PANGAEA - Data Publisher for Earth & Environmental Science
255
University of California: eScholarship
254
Dryad Digital Repository (Duke University)
244
University of Copenhagen: Research
237
Springer Nature (via Crossref)
233
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
228
RePEc (Research Papers in Economics)
223
University of Calgary Journal Hosting
191
Defense Technical Information Center: DTIC Technical Reports database
170
LaCRIS - University of Lapland Current Research System
162
Lund University Publications (LUP)
152
Arctic Council Repository
149
HELDA – University of Helsinki Open Repository
148
HAL Sorbonne Université
141
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
136
Natural Environment Research Council: NERC Open Research Archive
135
University of Alaska: ScholarWorks@UA
133
Wageningen UR (University & Research Centre): Digital Library
130
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
120
Cambridge University Press
119
Frontiers (Publisher)
110
Umeå University: Publications (DiVA)
110
Digital.CSIC (Spanish National Research Council)
106
Archives ouvertes de Paris-Saclay
105
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
104
International Arctic Research Center (IARC) Data Archive (via DataONE)
101
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
99
NTNU Open Archive (Norwegian University of Science and Technology)
96
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
95
Theses Canada/Thèses Canada (Library and Archives Canada)
89
University of Bergen: Bergen Open Research Archive (BORA-UiB)
87
Max Planck Society: MPG.PuRe
84
more ...