Content Provider
Open Parks Network
1,845
Directory of Open Access Journals: DOAJ Articles
1,053
DataCite Metadata Store (German National Library of Science and Technology)
785
Unknown
774
University of the Pacific, McGeorge School of Law: Scholarly Commons
515
University of the Pacific: Scholarly Commons
513
Copernicus Publications: E-Journals
467
Cambridge University Press
465
Wiley Online Library
463
PANGAEA - Data Publisher for Earth & Environmental Science
299
DataCite
298
LeibnizOpen (The Leibniz Association)
286
Niedersächsisches Online-Archiv NOA
285
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
241
University of St Andrews: Research Portal
231
Aarhus University: Research
190
University of Copenhagen: Research
184
Université de Nantes: HAL-UNIV-NANTES
173
Washington State University: WSU Libraries Digital Collections
171
Institut national des sciences de l'Univers: HAL-INSU
170
PubMed Central (PMC)
150
Technical University of Denmark: DTU Orbit
145
ScienceDirect (Elsevier - via Crossref)
140
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
128
MDPI Open Access Publishing
119
Utrecht University Repository
115
Zenodo
114
University of Alaska: ScholarWorks@UA
112
University of Bristol: Bristol Research
110
White Rose Research Online (Universities of Leeds, Sheffield & York)
107
SAGE Publications
99
University of Tromsø: Munin Open Research Archive
96
Apollo - University of Cambridge Repository
90
Springer Nature (via Crossref)
84
Informa
83
University of California: eScholarship
78
University of Zurich (UZH): ZORA (Zurich Open Repository and Archive
76
Natural Environment Research Council: NERC Open Research Archive
75
University of St Andrews: Digital Research Repository
75
National Institute of Polar Research Repository, Japan
71
University of Bergen: Bergen Open Research Archive (BORA-UiB)
70
ETH Zürich Research Collection
63
Hokkaido University Collection of Scholarly and Academic Papers (HUSCAP)
63
The University of Manchester: Research Explorer
62
University of Calgary Journal Hosting
62
Uppsala University: Publications (DiVA)
62
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
60
ScienceDirect (Elsevier)
56
Informa (via Crossref)
55
Skemman (Iceland)
55
more ...