Collections & Resources

This page incorporates international repositories and collections of grey literature information followed by subject-specific research guides created and maintained by schools and universities. We hope interested parties will explore these resources for research queries, general information, and educational tools.


This organization seeks to encourage research and dialogue between people interested in grey literature, as well as distribute information on GL. GreyNet hosts International Conference Series on GL, creates and maintains online resources of grey literature, develops curriculum in the field, and publishes The Grey Journal (TGJ). The website includes directories and membership information, archive and repository links, and educational materials on GL.

This report is published bimonthly by the New York Academy of Medicine (NYAM) and updates readers to new grey literature publications in health services research and public health topics. Users can search the database with keyword searching or filtering by area of interest. The most recent report is Volume 16, Number 2, March 2014. The site also includes an overview definition of Grey Literature, a publishers listing, and allows users to subscribe to the bimonthly report.

OpenGrey is an open access online repository of grey literature that partners with GreyNet International to provide grey literature publications to users. The database contains documents collected by European institutions and covers multiple disciplines ranging from the sciences to humanities. OpenGrey also collects the conference preprints of GreyNet International. Users can search by keyword, by subject, or by filtering through organization, year, document type, etc.

Operated by the University of British Columbia, HLWiki provides a thorough listing of grey literature information, visualizations, access strategies, and learning tools to encourage discussion within GL research. HLWiki International was created in 2006 as a tool to support the School of Library, Archival and Information Studies (SLAIS) at the University of British Columbia.

CIAO is the world’s largest full-text online resource for political science, diplomatic history, international law and business, policy formation, and country analysis. It is  a full-text online database encompassing more than 400,000 pages of working papers, policy briefs, interviews, journal articles, and e-books in the field of international relations. Access to this repository is available through subscription packages.

OpenDOAR represents a directory of open access repositories around the world, and it is hosted and maintained by SHERPA services based at the Centre for Research Communications at the University of Nottingham. As well as providing a repository list, OpenDOAR  allows for searching by repository or searching repository contents. It also provides tools and support to both repository administrators and service providers in sharing best practice and improving the quality of the repository infrastructure.

ClinicalTrials is a registry and results database of publicly and privately supported clinical studies of human participants conducted around the world. It is a service of the United States National Institutes of Health, and provides patients, their family members, and the public with free and easy access to information on clinical studies for a wide range of diseases and conditions. The data is updated on a nightly basis, and new studies are continuously added.

Supplementing the Rutgers School of Law Library in Newark, NJ, this database contains GL publications on crime and criminal justice available online or in the Don M. Gottfredson Library of Criminal Justice.


The following GL subject research guides are provided as additional sources of information relating to particular field topics. These subject guides have been created and are mostly used by the students, professors, and researchers at the host institution. Access to certain materials may be restricted to subscription or affiliation with each school. The quality and inclusiveness of each resource will also vary depending on the regularity of updates.

Medicine/Health Science/Government

STEM (Science, Technology, Engineering, Math)

Social Science/Humanities


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