Content Provider
Memorial University of Newfoundland: Digital Archives Initiative (DAI)
5,317
University of Michigan: Digital Collections
4,413
DataCite Metadata Store (German National Library of Science and Technology)
2,549
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
1,374
Memorial University of Newfoundland: Research Repository
1,185
Unknown
375
Biodiversity Heritage Library (BHL)
342
Directory of Open Access Journals: DOAJ Articles
296
PubMed Central (PMC)
237
Zenodo
186
Canadian Science Publishing (via Crossref)
132
RePEc (Research Papers in Economics)
96
SAGE Publications (via Crossref)
94
ScienceDirect (Elsevier - via Crossref)
93
University of New Brunswick: Centre for Digital Scholarship Journals
90
Springer Nature (via Crossref)
75
Theses Canada/Thèses Canada (Library and Archives Canada)
75
Wiley Online Library (via Crossref)
74
Hathi Trust Digital Library
70
David Rumsey Historical Map Collection (Cartography Associates)
65
Érudit.org (Université Montréal)
63
Cambridge University Press
56
Defense Technical Information Center: DTIC Technical Reports database
53
Memorial University of Newfoundland: Electronic Journals
53
University of Calgary Journal Hosting
53
McGill University: eScholarship@McGill
52
HighWire Press (Stanford University)
49
Oxford University Press (via Crossref)
48
Informa (via Crossref)
44
MDPI Open Access Publishing
43
Frontiers: Figshare
41
Saint Mary's University, Halifax: Institutional Repository
38
Biological and Chemical Oceanography Data Management Office (BCO-DMO) (via DataONE)
37
APS Digital Library (American Philosophical Society)
33
University of Toronto: Research Repository T-Space
33
Five Colleges of Ohio Digital Collections
32
Missouri State University: Digital Collections
32
Dalhousie University: DalSpace Institutional Repository
30
The Portal to Texas History (University of North Texas)
27
Wiley Online Library
27
National Research Council Canada: NRC Publications Archive
26
BioMed Central
24
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
23
JSTOR (via Crossref)
23
WikiBooks - Open-content textbooks
23
Arca (BC's Digital Treasures)
22
Canadian Science Publishing
22
The University of Utah: J. Willard Marriott Digital Library
22
Schulich Scholars (Schulich School of Law, Dalhousie University)
20
University of British Columbia: cIRcle - UBC's Information Repository
20
more ...