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Open content in WorldCat Discovery search results

Learn about Open Access in WorldCat Discovery.

Open Access filter

The open access content filter narrows a user's search to a subset of databases known for providing open access content. The open access subset of databases from include:

  • BioMed Central
  • Directory of Open Access Books (DOAB)
  • Directory of Open Access Journals (DOAJ)
  • HBO Kennisbank
  • Hindawi eJournals
  • JSTOR Open Access Books
  • JSTOR Open Access Journal Collection
  • Knowledge Unlatched
  • OAIster
  • Open Access Publishing in European Networks (OAPEN)
  • OpenEdition Books
  • OpenEdition Hypotheses
  • OpenEdition
  • Paperity
  • Public Library of Science (PLOS)
  • Project Euclid
  • SciELO Journals
  • WorldCat  Note: The selection made is based on WorldCat 506 subfield f of Unrestricted Access Online.

Open Access results can be filtered on the Advanced Search screen and in search filters using Filter and refine search results.

Open Access DOI links enhanced by Unpaywall

Users can access open content using DOI full text and open access links provided by Unpaywall. For more information see, When enabled, DOIs will inform the Access Online action on search results, detailed records, and Course Reserves. DOIs are compared to Unpaywall data to ensure that only DOIs leading to open access content display. When a DOI leads to a downloadable PDF, a View PDF button appears on DOI links enhanced by Unpaywall. When it cannot be determined that a DOI link informed by Unpaywall leads to a PDF, a link to Access Online <insert DOI> appears. If a DOI is not present in Unpaywall, the DOI will not inform the Access Online button, but will continue to display in the Description of detailed records.

 Note:  If a user encounters a link from Unpaywall that does not lead to Open Access, report the link to

Configure Open Access links

Open Access configuration is managed in OCLC Service Configuration. For more information, see Full Text and Open Access Links.


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