Content Provider
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
5,611
Biodiversity Heritage Library (BHL)
3,677
WikiBooks - Open-content textbooks
3,415
Unknown
581
Aarhus University: Research
513
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
462
Technical University of Denmark: DTU Orbit
398
University of Copenhagen: Research
397
OLAC: Open Language Archives Community
341
UNESDOC - UNESCO Digital Library
239
Arctic Portal Library
233
University of Southampton: e-Prints Soton
220
International Association of Aquatic and Marine Science Libraries and Information Centers (IAMSLIC): Aquatic Commons
214
norden (Nordic Council of Ministers): Publications (DiVA)
208
Texas A&M University Digital Repository
161
Open Research Library
131
LaCRIS - University of Lapland Current Research System
118
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
110
Helsingfors Universitet: HELDA – Helsingin yliopiston digitaalinen arkisto
104
Aalborg University's Research Portal
85
OpenAgrar (OA)
85
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
83
VTT's Research Information Portal
81
University of North Texas: UNT Digital Library
73
DataCite Metadata Store (German National Library of Science and Technology)
72
IIASA DARE (Data Repository of the International Institute of Applied Systems Analysis)
72
IIASA PURE (International Institute of Applied Systems Analysis: PUblications REpository)
70
University of the Highlands and Islands: Research Database of UHI
65
USRA Houston Repository (Universities Space Research Association)
58
Arca (BC's Digital Treasures)
55
University of St Andrews: Research Portal
54
Université de Nantes: HAL-UNIV-NANTES
52
Roskilde University Research Portal (RUC)
46
National Institute of Polar Research Repository, Japan
43
GEO-LEOe-docs (FID GEO)
42
University of Lapland: Lauda
42
Marine Institute Open Access Repository
40
UNBC's Digital Institutional Repository (University of Northern British Columbia)
38
Australian National University: ANU Digital Collections
37
Zenodo
37
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
36
University of Groningen research database
35
Gallica - bibliothèque numérique de la Bibliothèque nationale de France (BnF)
34
University of Bristol: Bristol Research
34
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
32
University of Southern Denmark Research Portal
31
PRISM - University of Calgary Digital Repository
27
HELDA – University of Helsinki Open Repository
25
University of Alaska: ScholarWorks@UA
24
e-rara.ch (ETH Zürich)
24
more ...