Content Provider
Directory of Open Access Journals: DOAJ Articles
132
DataCite Metadata Store (German National Library of Science and Technology)
60
Unknown
35
DRO - Deakin Research Online
32
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
27
University of Tromsø: Septentrio Academic Publishing
27
Université de Nantes: HAL-UNIV-NANTES
23
Ghent University Academic Bibliography
22
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
22
Zenodo
20
Institute of Hydrobiology, Chinese Academy of Sciences: IHB OpenIR
19
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
19
University of Groningen research database
18
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
17
Wageningen UR (University & Research Centre): Digital Library
15
Frontiers: Figshare
14
Dryad Digital Repository (Duke University)
13
Institut national des sciences de l'Univers: HAL-INSU
13
National Research Council Canada: NRC Publications Archive
13
MDPI Open Access Publishing
12
University of St Andrews: Research Portal
12
PANGAEA - Data Publisher for Earth & Environmental Science
10
University of California: eScholarship
9
University of Stirling: Stirling Digital Research Repository
9
CyberLeninka (Scientific Electronic Library)
8
Natural Resources Institute Finland: Jukuri
8
Digital.CSIC (Spanish National Research Council)
7
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
7
NOAA NCEI Environmental Data Archive (via DataONE)
7
Technical University of Denmark: DTU Orbit
7
Journals at the University of Arizona
6
Université de Bretagne Occidentale: HAL
6
Biblioteca Digital FCEN-UBA (Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires)
5
Dalhousie University: DalSpace Institutional Repository
5
Digital Repository of the University of Hawaii at Manoa
5
HAL - Université de La Rochelle
5
Research Data Australia (Australian National Data Service - ANDS)
5
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
5
Texas A&M University Digital Repository
5
Universidad de Las Palmas de Gran Canaria: Acceda
5
University of Thessaly Institutional Repository
5
Biodiversity Heritage Library (BHL)
4
Hathi Trust Digital Library
4
Open archive Norwegian University of Life Sciences: Brage NMBU
4
Radboud University: DSpace
4
Repositorio Académico de la Universidad Católica de Temuco (UCT)
4
University of Tasmania: UTas ePrints
4
Université de Montpellier: HAL
4
Utah State University: DigitalCommons@USU
4
Arctic Data Center (via DataONE)
3
more ...