Content Provider
University of Washington, Seattle: Digital Collections
6,218
DataCite Metadata Store (German National Library of Science and Technology)
5,105
Directory of Open Access Journals: DOAJ Articles
2,063
Open Parks Network
1,896
Arctic Data Center (via DataONE)
1,879
Unknown
1,622
PANGAEA - Data Publisher for Earth & Environmental Science
1,128
Cambridge University Press
876
University of the Pacific, McGeorge School of Law: Scholarly Commons
809
University of the Pacific: Scholarly Commons
808
Research Data Australia (Australian National Data Service - ANDS)
666
Copernicus Publications: E-Journals
652
LeibnizOpen (The Leibniz Association)
599
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
576
University of Michigan: Digital Collections
565
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
526
Zenodo
497
Niedersächsisches Online-Archiv NOA
431
Wiley Online Library
431
Université de Nantes: HAL-UNIV-NANTES
388
IEDA: US Antarctic Program Data Center (via DataONE)
374
Defense Technical Information Center: DTIC Technical Reports database
364
University of California: eScholarship
354
Natural Environment Research Council: NERC Open Research Archive
329
Institut national des sciences de l'Univers: HAL-INSU
313
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
289
David Rumsey Historical Map Collection (Cartography Associates)
283
ScienceDirect (Elsevier - via Crossref)
261
MDPI Open Access Publishing
254
Frontiers: Figshare
242
Aarhus University: Research
233
Washington State University: WSU Libraries Digital Collections
221
PubMed Central (PMC)
214
University of Copenhagen: Research
204
Wiley Online Library (via Crossref)
203
University of Bristol: Bristol Research
193
University of Alaska: ScholarWorks@UA
186
Informa (via Crossref)
185
University of St Andrews: Research Portal
182
eCite UTAS (University of Tasmania)
181
Springer Nature (via Crossref)
173
Technical University of Denmark: DTU Orbit
163
Université Grenoble Alpes: HAL
160
Utrecht University Repository
157
National Institute of Polar Research Repository, Japan
142
ETH Zürich Research Collection
137
Ohio State University (OSU): Knowledge Bank
135
Ice and Snow (E-Journal)
132
University of Calgary Journal Hosting
132
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
130
more ...