Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
1,828
Directory of Open Access Journals: DOAJ Articles
378
Unknown
333
Wiley Online Library
230
PubMed Central (PMC)
218
Zenodo
165
Wiley Online Library (via Crossref)
136
Digital.CSIC (Spanish National Research Council)
94
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
91
ScienceDirect (Elsevier - via Crossref)
83
Springer Nature (via Crossref)
82
Open archive Norwegian University of Life Sciences: Brage NMBU
68
Université de Nantes: HAL-UNIV-NANTES
62
Høgskolen i Innlandet: Brage INN
59
Sapienza Università di Roma: CINECA IRIS
59
Repository of the University of Ljubljana (RUL)
54
Dryad Digital Repository (Duke University)
53
Biodiversity Heritage Library (BHL)
52
Canadian Science Publishing
51
Norwegian Institute for Nature Research: Brage NINA
50
Canadian Science Publishing (via Crossref)
47
BioOne Online Journals
46
MDPI Open Access Publishing
44
LeibnizOpen (The Leibniz Association)
43
Data Archiving and Networked Services (DANS): EASY (KNAW - Koninklijke Nederlandse Akademie van Wetenschappen)
42
PANGAEA - Data Publisher for Earth & Environmental Science
42
HighWire Press (Stanford University)
36
Swedish University of Agricultural Sciences (SLU): Epsilon Open Archive
35
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
34
Swedish University of Agricultural Sciences: Epsilon Archive for Student Projects
32
Aarhus University: Research
30
Oregon Digital (University of Oregon/Oregon State University)
30
University of Nebraska-Lincoln: DigitalCommons@UNL
29
Utah State University: DigitalCommons@USU
29
CyberLeninka (Scientific Electronic Library)
28
University of California: eScholarship
28
Université Grenoble Alpes: HAL
27
RePEc (Research Papers in Economics)
26
Inland Norway University of Applied Sciences: Brage INN
25
Oxford University Press (via Crossref)
25
Université Savoie Mont Blanc: HAL
25
Natural Resources Institute Finland: Jukuri
22
ScienceDirect (Elsevier)
21
Oxford University Press
20
PLOS
20
Croatian Digital Theses Repository (National and University Library in Zagreb)
19
Universidad de León: BULERIA
19
University of South Florida St. Petersburg: Digital USFSP
19
Digital Commons University of South Florida (USF)
18
Frontiers: Figshare
18
more ...