open-access repository
freely accessible repository of research publications and data
Lunar and Planetary Institute
American research institute in Houston
Education Resources Information Center
US Department of Education online repository
DiVA
repository of full-text publications from a number of Nordic universities
World Bank Open Knowledge Repository
Open-access repository
BASE (Bielefeld Academic Search Engine)
academic search engine
National Science Digital Library
open-access digital library from United States
Analysis & Policy Observatory
not-for-profit open access digital library featuring research resources on public interest issues from Australia, New Zealand and international sources
Astrophysics Data System
digital library portal for researchers in astronomy and physics, operated by the Smithsonian Astrophysical Observatory
Stanford Physics Information Retrieval System
database management system developed by Stanford University
Archaeology Data Service
accredited digital repository for heritage data generated by UK-based fieldwork and research
e-LIS
international open access repository for academic papers in Library and Information Science (LIS)
Research Papers in Economics
bibliographic database for economics
HAL
French open access repository
Social Science Research Network
open access eLibrary; part of Elsevier
Library and Archives Canada
national library and archives of Canada
Social Science Open Access Repository
repository
Crystallography Open Database
open-access collection of crystal structures of organic, inorganic, metal-organic compounds and minerals
Transporter Classification database
classification of membrane proteins including ion channels
University of Florida Digital Collections
collection of digital resources from the University of Florida's library collections and partner institutions
Swedish National Data Service
infrastructure for research data management and publishing
Theseus
open-access repository of vocational universities in Finland
Biodiversity Heritage Library
digital library, online database and large-scale digitization project for biodiversity literature
Doria
multi-institutional repository, maintained by National Library of Finland