Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
940
Unknown
344
NOAA NCEI Environmental Data Archive (via DataONE)
127
Directory of Open Access Journals: DOAJ Articles
103
University of Calgary Journal Hosting
81
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
65
Defense Technical Information Center: DTIC Technical Reports database
58
Copernicus Publications: E-Journals
46
Université de Nantes: HAL-UNIV-NANTES
40
Arctic Data Center (via DataONE)
39
Institut national des sciences de l'Univers: HAL-INSU
38
Aarhus University: Research
36
Niedersächsisches Online-Archiv NOA
30
PubMed Central (PMC)
24
LeibnizOpen (The Leibniz Association)
22
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
19
Cambridge University Press
18
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
14
Wiley Online Library
14
University of Copenhagen: Research
13
Springer Nature (via Crossref)
12
University of Windsor, Ontario: Scholarship at UWindsor
12
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
12
MSpace at the University of Manitoba
11
NASA Technical Reports Server (NTRS)
11
Université de Bretagne Occidentale: HAL
11
MDPI Open Access Publishing
9
University of Alberta: Era - Education and Research Archive
9
Université Laval: CorpusUL
9
Aix-Marseille Université: HAL
8
Canadian Science Publishing (via Crossref)
8
Frontiers: Figshare
8
Media SuUB Bremen (Staats- und Universitätsbibliothek Bremen)
8
University of Tromsø: Munin Open Research Archive
8
Arctic Council Repository
7
HAL Sorbonne Université
7
Institut national de la recherche scientifique, Québec: Espace INRS
7
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
7
PANGAEA - Data Publisher for Earth & Environmental Science
7
ScienceDirect (Elsevier)
7
Theses Canada/Thèses Canada (Library and Archives Canada)
7
University of St Andrews: Research Portal
7
University of Toronto: Research Repository T-Space
7
Borealis
6
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
6
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
6
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
6
Aarhus University: OJS at The State and University Library
5
Archives ouvertes de Paris-Saclay
5
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
5
more ...