Content Provider
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Oxford University Press
5,925
OECD iLibrary (via Crossref)
5,865
Dryad Digital Repository (Duke University)
5,830
HAL Sorbonne Université
5,729
JSTOR (via Crossref)
5,493
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
5,470
OLAC: Open Language Archives Community
5,447
WikiBooks - Open-content textbooks
5,334
Springer Nature
5,274
NASA Technical Reports Server (NTRS)
5,269
University of Calgary Journal Hosting
5,147
University of St Andrews: Research Portal
4,967
SFU Digitized Collections (Simon Fraser University)
4,933
Arctic Institute of North America
4,889
Canadian Science Publishing
4,835
University of Southampton: e-Prints Soton
4,572
Technical University of Denmark: DTU Orbit
4,376
Max Planck Society: MPG.PuRe
4,242
Institute for Marine Research: Brage IMR
4,215
Memorial University of Newfoundland: Research Repository
4,187
ArXiv.org (Cornell University Library)
4,119
Frontiers (Publisher)
3,994
Ohio State University (OSU): Knowledge Bank
3,908
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
3,877
University of Alaska: ScholarWorks@UA
3,874
IOP Publishing
3,705
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
3,678
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
3,551
University of Lethbridge Digitized Collections
3,353
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
3,329
USGS Science Data Catalog (via DataONE)
3,232
GFZpublic (German Research Centre for Geosciences, Helmholtz-Zentrum Potsdam)
3,192
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE)
3,187
NTNU Open Archive (Norwegian University of Science and Technology)
3,173
Wageningen UR (University & Research Centre): Digital Library
3,155
Theses Canada/Thèses Canada (Library and Archives Canada)
3,109
Université Grenoble Alpes: HAL
3,098
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
3,040
University of Tasmania: UTas ePrints
3,039
Lund University Publications (LUP)
2,974
Archives ouvertes de Paris-Saclay
2,962
CONICET Digital (Consejo Nacional de Investigaciones Científicas y Técnicas)
2,949
Luleå University of Technology Publications (DiVA)
2,943
University of Alberta: Era - Education and Research Archive
2,914
Umeå University: Publications (DiVA)
2,902
The Royal Society
2,850
Hirsla - Landspítali University Hospital research archive
2,848
IEDA: Marine-Geo Digital Library (via DataONE)
2,828
University of Bergen: Bergen Open Research Archive (BORA-UiB)
2,809
Natural Resources Institute Finland: Jukuri
2,802
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