Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
11,439
PANGAEA - Data Publisher for Earth & Environmental Science
4,353
Unknown
3,234
Arctic Data Center (via DataONE)
2,658
Directory of Open Access Journals: DOAJ Articles
2,323
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
1,647
Copernicus Publications: E-Journals
1,070
Defense Technical Information Center: DTIC Technical Reports database
1,010
Zenodo
780
Niedersächsisches Online-Archiv NOA
719
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
696
Springer Nature (via Crossref)
553
Institut national des sciences de l'Univers: HAL-INSU
543
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
526
PubMed Central (PMC)
499
LeibnizOpen (The Leibniz Association)
450
Université de Nantes: HAL-UNIV-NANTES
427
University of Tromsø: Munin Open Research Archive
418
MDPI Open Access Publishing
371
University of Calgary Journal Hosting
339
Wiley Online Library
329
HAL Sorbonne Université
307
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research)
290
Natural Environment Research Council: NERC Open Research Archive
277
SciTec Connect (Office of Scientific and Technical Information - OSTI, U.S. Department of Energy)
276
NASA Technical Reports Server (NTRS)
271
Aarhus University: Research
269
Frontiers: Figshare
261
ScienceDirect (Elsevier - via Crossref)
255
Max Planck Society: MPG.PuRe
252
Université de Versailles Saint-Quentin-en-Yvelines: HAL-UVSQ
236
University College London: UCL Discovery
209
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives)
205
University of Bergen: Bergen Open Research Archive (BORA-UiB)
200
University of California: eScholarship
186
Woods Hole Scientific Community: WHOAS (Woods Hole Open Access Server)
185
Cambridge University Press
180
Archives ouvertes de Paris-Saclay
179
Technical University of Denmark: DTU Orbit
174
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
173
École Polytechnique, Université Paris-Saclay: HAL
170
Wiley Online Library (via Crossref)
168
Frontiers (Publisher)
159
DIAL@USL-B (Université Saint-Louis, Bruxelles)
158
Muséum National d'Histoire Naturelle (MNHM): HAL
158
IEEE Publications (via Crossref)
151
Université de Paris: Portail HAL
151
NOAA NCEI Environmental Data Archive (via DataONE)
149
Digital.CSIC (Spanish National Research Council)
145
CentAUR: Central Archive at the University of Reading
142
more ...