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This repository hosted by the Smithsonian Institution Libraries offers open access content from the Smithsonian research community. In addition to several collections from Smithsonian, it includes collections from various institutions including the National Museum of Natural History and the United States National Museum. For more information: http://si-pddr.si.edu/dspace/

The SPIE Digital Library covers optics and photonics. SPIE's peer reviewed journals are dedicated to advancing the science and application of light and light-based technologies. This resource includes Open Access journal content. For more information: https://www.spiedigitallibrary.org/journals

This collection includes Open Access articles provided by Springer, all available free of charge. Articles published under the Bohn Stafleu van Loghum are not included. For more information about SpringerOpen and Springer Open Choice: http://www.springer.com/open+access?SGWID=0-169302-0-0-0

OpenSUNY Digital Textbooks is an Open Access resource, sponsored by the State Universities of New York. The online textbooks encompass a gamut of subject areas. For more information: http://textbooks.opensuny.org/

This digitized collection of free scholarly scientific journals is available as part of the Swiss Electronic Academic Library Service. Titles are in German and in French. Coverage dates back to the early 1800's. For more information, http://retro.seals.ch/digbib/home

This collections includes current and archival Open Access journal articles spanning the Humanities, Social Sciences, Science and Technology the Psychology Press, Routledge and Taylor & Francis imprints. For more information: https://www.tandfonline.com/openaccess

"The World Bank is the largest single source of development knowledge. The World Bank Open Knowledge Repository (OKR) is The World Bank’s official open access repository for its research outputs and knowledge products. By extending and improving access to World Bank research, the World Bank aims to encourage innovation and allow anyone in the world to use Bank knowledge to help improve the lives of those living in poverty. The OKR is updated with new content, as well as legacy reports and research. Most records include a link to the full text, some content may be embargoed. For more information: https://openknowledge.worldbank.org/about and https://openknowledge.worldbank.org/faq"

Thieme eJournals serve the research and education needs of academic institutions, medical schools, and hospitals, as well as the pharmaceutical and chemical industries. Review journals cover Medicine, Chemistry, and Life Sciences. This collection includes Open Access content. For more information: https://www.thieme.de/en/thieme-connect/home-3939.htm

ERIC is a well-known collection of education research and information sponsored by the Institute of Education Sciences of the U.S. Department of Education. The database includes bibliographic records of journal articles and other education-related materials. For more information: http://www.eric.ed.gov

The United States Patent and Trademark Office (USPTO) is the federal agency for granting U.S. patents and registering trademarks. The continued demand for patents and trademarks underscores the ingenuity of American inventors and entrepreneurs. U.S. Patent Applications contains Pre-2009 content. More current content coming soon. For more information: https://www.uspto.gov/about-us and at https://www.uspto.gov/patents-application-process/patent-search/publish…

Open Textbook Library is an Open Access resource, sponsored by the University of Minnesota (UMN) Center for Open Education. The online textbooks cover a gamut of subject areas. For more information: http://open.umn.edu/opentextbooks/

Dialnet provides journals and theses. It is one of the largest databases of Hispanic content. The collection includes only part of Dialnet's data. For more information see:http://dialnet.unirioja.es/

The University of Adelaide is a leading research intensive university with libraries that support world class education and research across a full range of academic and professional disciplines. Part of that support activity is the University of Adelaide Press. The University of Adelaide Press was launched in 2009 by author and Nobel Prize winner J. M. Coetzee. The University of Adelaide Press publishes high-quality texts by academics across Australia and world-wide. With the newer internet and digital book technology, those books are accessible in simultaneous print and (with a couple of exceptions) free PDF editions. The books are subject to external peer-review in line with government research quality requirements (such as HERDC and ERA in Australia). For more information: http://www.adelaide.edu.au/press/about/

The UCLA Music Library's Archive of Popular American Music [APAM] is a research collection covering the history of popular music in the United States from 1790. The Digital Archive of Popular American Music is an initiative designed to provide access to digital versions of the sheet music, now in the public domain. Particular strengths within UCLA Music Library's twentieth-century holdings include music for the theater, motion pictures, radio and television, as well as general popular music, country, rhythm and blues, and rock songs. For more information: http://digital.library.ucla.edu/apam/index.html

This collection contains the academic journals available on PoPuPS, the Gold Open Access journal platform launched by the University of Liège Library. Articles are mainly in English and French. For more information: https://popups.uliege.be

ORBi gives access the Open Access research output of the University of Liège. This Green Open Access repository includes scholarly articles, books, contributions to books and reference works, published and unpublished scientific papers, reports, dissertations and theses, pre-prints, and more. For more information: https://orbi.uliege.be

British History Online (BHO) is a not-for-profit digital library based at the Institute of Historical Research; University of London. It brings together key printed primary and secondary sources for the history of Britain and Ireland, with a primary focus on the period between 1300 and 1800. This collection includes free content from the BHO platform. For more information: http://www.british-history.ac.uk/

AgEcon Search is an open access repository of scholarly literature in agricultural and applied economics. It includes working papers, conference papers, and journal articles, and other materials. AgEcon Search is maintained at the University of Minnesota and co-sponsored by the University's Department of Applied Economics, its libraries, and the Agricultural and Applied Economics Associations. For more information: http://ageconsearch.umn.edu

UW Space-Theses includes Master's and PhD level theses submitted by graduates of the University of Waterloo. The resource includes all electronically submitted theses, and those that were scanned through the Theses Canada program. For more information: https://uwspace.uwaterloo.ca/handle/10012/6

The World Scientific Open Access Journals collection, includes selected articles, covering such fields as biomedical science, physics, medical science, and life sciences. All articles in this collection are available on an Open Access basis. For more information: http://www.worldscientific.com/page/open