Research Guides: Open Access: Finding Open Access Resources

Tools for Finding OA Content

Open Access Button
Browser extension searches for OA versions of paywalled content. Works with Chrome, Firefox, Safari, iPad, and Internet Explorer. If you can't find OA version of an article, this service can also help reach out to authors to request the article.
Unpaywall
Browser extension searches for OA versions of paywalled content. Works with Chrome and Firefox.

PubMed Central (PMC)
Free full-text archive of biomedical and life sciences journal literature at the U.S. National Institutes of Health's National Library of Medicine (NIH/NLM).
arXiv.org
A fully automated electronic archive and distribution server for research papers. Covers physics and related disciplines, mathematics, nonlinear sciences, computational linguistics, and neuroscience.
bioRxiv
Open-Access resources for life sciences and biology operated by the Cold Spring Harbor Laboratory.
engrXiv
Open Access repository in engineering, architecture, physical sciences, and mathematics accepting preprints. Run off of the Open Science Framework (also known as OSF, it is an Open Source application).
ChemRxiv
Soon to be launched by the American Chemical Society. This server will offer preprints for chemistry and be run off of the Open Science Framework (OSF).
SocArXiv
Offers open-access preprints for arts and humanities, education, law, and social and behavioral sciences. Run by a steering committee, off the OSF.
PsyArXiv
Open-Access preprints for the psychological sciences Run by the Society for the Improvement of Psychological Science, off the OSF.
Humanities Commons
Humanities Commons is an OA disciplinary repository for the humanities.The CORE repository is open to everyone, and other repositories are specialized based on affiliation with societies or fields.

figshare
Allows users to upload and share any file format to be previewed in the browser so that any research output, from posters and presentations to datasets and code
Dryad Digital Repository
A curated resource that makes the data underlying scientific publications discoverable, freely reusable, and citable.
Zenodo
Data repository for researchers to deposit and share datasets, run by CERN.
Research Data Australia
Find, access, and re-use data for research - from over one hundred Australian research organizations, government agencies, and cultural institutions. Run by the Australian National Data Service (ANDS).
Data.gov
Data.gov is an open data repository managed and hosted by the U.S. General Services Administration, Technology Transformation Service. It is powered by two open source applications, CKAN and WordPress, and it is developed publicly on GitHub.