Content Provider
DataCite
109
Directory of Open Access Journals: DOAJ Articles
102
DataCite Metadata Store (German National Library of Science and Technology)
76
Unknown
49
Defense Technical Information Center: DTIC Technical Reports database
46
Arctic Council Repository
28
Wiley Online Library
28
Copernicus Publications: E-Journals
25
MDPI Open Access Publishing
25
LeibnizOpen (The Leibniz Association)
21
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
19
PubMed Central (PMC)
19
Zenodo
16
Niedersächsisches Online-Archiv NOA
14
Université de Nantes: HAL-UNIV-NANTES
14
University of Tromsø: Munin Open Research Archive
13
HELDA – University of Helsinki Open Repository
12
Institut national des sciences de l'Univers: HAL-INSU
12
PANGAEA - Data Publisher for Earth & Environmental Science
11
Aarhus University: Research
10
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
9
Queen's University, Ontario: QSpace
8
University of Alaska: ScholarWorks@UA
8
University of Potsdam: publish.UP
8
Vrije Universiteit Amsterdam (VU): Research Portal
8
Theses Canada/Thèses Canada (Library and Archives Canada)
7
University of Calgary Journal Hosting
7
University of California: eScholarship
7
Carleton University's Institutional Repository
6
ETH Zürich Research Collection
6
Archives ouvertes de Paris-Saclay
5
BioOne Online Journals
5
Canadian Science Publishing
5
Lund University Publications (LUP)
5
Natural Environment Research Council: NERC Open Research Archive
5
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
5
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
5
Polar Research (E-Journal)
5
Springer Nature (via Crossref)
5
Technical University of Denmark: DTU Orbit
5
University of Copenhagen: Research
5
University of North Texas: UNT Digital Library
5
University of the Sunshine Coast, Queensland, Australia: COAST Research Database
5
Cambridge University Press
4
DIAL@USL-B (Université Saint-Louis, Bruxelles)
4
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
4
Northumbria University, Newcastle: Northumbria Research Link (NRL)
4
Open-Access-Publikationsserver der Humboldt-Universität: edoc-Server
4
University of Bergen: Bergen Open Research Archive (BORA-UiB)
4
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
4
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