Content Provider
Directory of Open Access Journals: DOAJ Articles
2,390
University of Tromsø: Munin Open Research Archive
2,139
Unknown
1,581
DataCite Metadata Store (German National Library of Science and Technology)
1,429
PubMed Central (PMC)
935
LeibnizOpen (The Leibniz Association)
754
Wiley Online Library
726
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
605
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
574
NTNU Open Archive (Norwegian University of Science and Technology)
562
Institute for Marine Research: Brage IMR
505
University of Bergen: Bergen Open Research Archive (BORA-UiB)
484
HighWire Press (Stanford University)
427
Springer Nature (via Crossref)
420
PANGAEA - Data Publisher for Earth & Environmental Science
388
ScienceDirect (Elsevier - via Crossref)
371
Cambridge University Press
344
Université de Nantes: HAL-UNIV-NANTES
341
Defense Technical Information Center: DTIC Technical Reports database
327
Open archive Norwegian University of Life Sciences: Brage NMBU
322
Copernicus Publications: E-Journals
314
Informa (via Crossref)
293
Aarhus University: Research
278
Norwegian Institute for Nature Research: Brage NINA
271
MDPI Open Access Publishing
251
NGU Open Archive (Geological Survey of Norway)
248
University of Tromsø: Septentrio Academic Publishing
231
UNESDOC - UNESCO Digital Library
229
Niedersächsisches Online-Archiv NOA
224
Arctic Council Repository
213
University of Copenhagen: Research
201
Wiley Online Library (via Crossref)
188
Institut national des sciences de l'Univers: HAL-INSU
184
norden (Nordic Council of Ministers): Publications (DiVA)
174
HELDA – University of Helsinki Open Repository
160
DataverseNO
148
Lund University Publications (LUP)
147
University of St Andrews: Research Portal
147
BioMed Central
143
Digital.CSIC (Spanish National Research Council)
137
Hirsla - Landspítali University Hospital research archive
124
ScienceDirect (Elsevier)
123
Open archive Nord universitet
121
Umeå University: Publications (DiVA)
115
WikiBooks - Open-content textbooks
112
Opin vísindi (Iceland)
111
Høgskolen i Innlandet: Brage INN
110
da|ra - Registration agency for social and economic data
106
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
105
Uppsala University: Publications (DiVA)
104
more ...