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STEM - Free and Open Access Resources for Research


Search for OA Articles by Publisher

If you prefer to start your for articles at a particular publisher's site, some will allow you to limit your searches to free/OA articles. Even if the publisher doesn't allow you to limit results by OA content, such as with Science Direct, the articles that are OA should be clearly identified in the results.

Publisher How to Search for or Limit to OA Articles
American Chemical Society From the search results page, go to Refine Search, and under Access Type select Open Access Content, which will also include articles that were made freely available by the journal editors.
American Institute of Physics From the search results page, go to Refine Search and then Advanced. Select Open Access Content Only.
American Physical Society On the search page, check the Category box for Open Access. Or select Open Access from the Category list on the search results page.
American Association for the Advancement of Science Can browse results for OA articles the journals (including Science Advances, which is fully OA), but no way to limit or refine a search to do, though you can limit to just Science Advances.
American Society of Mechanical Engineers From the search results, scroll down the "Update Search" column for Availability. Select Open Access and Public Access.
Association for Computing Machinery Can browse results for OA and public access papers, but no way to limit or refine a search to do so.
BioMed Central Gold OA journals, so every article is free to read.
Cambridge University Press From the search results page, under Access select Only Show Open Access.
IEEE From the search results page, select Open Access Only.
Institute of Physics From the search results page, check the box for Open Access Only.
JSTOR

Search covers free/OA content in JSTOR only. 

  • (Full text coverage of journals from university presses, mostly social sciences and humanities, but some science journals covered. Most recent 3-5 years may not be available)
Nature Journals Can browse results for OA articles the journals (including fully OA journals like Scientific Reports and Nature Communi9cations), 
Oxford University Press From the Advanced Search page or when editing the Search Results, under Availability check the boxes for Free and Open Access.
Proceedings of the National Academy of Sciences From the Advanced Search page or when editing the Search Results, under Limit Results select Open Access Articles. Articles are freely available after 6 months, regardless of whether they were published OA or not.
Public Library of Science (PLoS) Gold OA journals, so every article is free to read.
Royal Society of Chemistry From the search results page, select Open Access under the Article Access filter.
ScienceDirect No way to filter or limit OA articles, but they are clearly identified in the search results.
SpringerLink No way to filter or limit OA articles, but they are clearly identified in the search results.
Wiley Online Library From the search results page, go to Access Status and select Open Access Content.