Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
1,277
Arctic Data Center (via DataONE)
1,200
Defense Technical Information Center: DTIC Technical Reports database
405
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
356
Dryad Digital Repository (Duke University)
329
PANGAEA - Data Publisher for Earth & Environmental Science
321
Directory of Open Access Journals: DOAJ Articles
288
Unknown
285
DataCite
244
University of Alaska: ScholarWorks@UA
244
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
236
Wiley Online Library
172
ESS-DIVE: Deep Insight for Earth Science Data (via DataONE)
150
Copernicus Publications: E-Journals
113
University of California: eScholarship
94
International Arctic Research Center (IARC) Data Archive (via DataONE)
73
Niedersächsisches Online-Archiv NOA
73
PubMed Central (PMC)
66
RePEc (Research Papers in Economics)
63
University of Calgary Journal Hosting
61
MDPI Open Access Publishing
51
University of North Texas: UNT Digital Library
51
IOP Publishing
48
Frontiers: Figshare
46
LeibnizOpen (The Leibniz Association)
42
Zenodo
42
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
31
Canadian Science Publishing
28
ScienceDirect (Elsevier - via Crossref)
25
Université de Nantes: HAL-UNIV-NANTES
25
Cambridge University Press
24
NASA Technical Reports Server (NTRS)
24
USGS Science Data Catalog (via DataONE)
24
University of Potsdam: publish.UP
24
Michigan Technological University: Digital Commons @ Michigan Tech
23
Springer Nature (via Crossref)
20
DIAL@UCLouvain (Université catholique de Louvain)
19
DIAL@USL-B (Université Saint-Louis, Bruxelles)
19
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences)
18
Environmental Data Initiative (via DataONE)
17
Institut national des sciences de l'Univers: HAL-INSU
16
ScienceDirect (Elsevier)
16
Frontiers (Publisher)
15
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
15
Université Grenoble Alpes: HAL
15
Informa
13
University of New Hampshire: Scholars Repository
13
University of Texas at El Paso: Digital Commons@UTEP
13
Utah State University: DigitalCommons@USU
13
Caltech Authors (California Institute of Technology)
12
more ...