CROSSREF_Extension_iThenticate_RGB_small.jpgCrossref Similarity Check powered by iThenticate is an initiative between iThenticate and Crossref®, a not-for-profit membership organization for scholarly publishing working to make content easy to find, cite, link, and assess. With thousands of journals sharing published works with the iThenticate database, the Crossref Similarity Check service offers publishers a way to compare documents against the largest comparison database of scientific, technical and medical content in the world.

Interested in getting started? Register for an account or read our service agreement.

Participating Publishers

The world's leading publishers have implemented similarity checking software into their editorial processes. Over 1300 publishers, including the top 15 most influential publishers, have signed up for the Crossref Similarity Check powered by iThenticate service. Today iThenticate's database includes nearly 226,000 global scientific, technical, medical journals, including:

  • American Institute of Physics (AIP)
  • American Physical Society (APS)
  • Ammons Scientific
  • American Psychological Association (APA)
  • Elsevier
  • IEEE
  • Institute of Physics (IOP)
  • Lippincott Williams & Wilkins (LWW)
  • Nature Publishing
  • Ovid
  • Oxford University Press (OUP)
  • Sage Publications
  • Springer
  • Taylor & Francis
  • Wiley-Blackwell
  • Zhejiang Publishing United Group Co., Ltd

See a full list of participating publishers here

Crossref Similarity Check Database

There are three parts that make up the iThenticate database. One part is the Crossref Similarity Check content from leading publishers. More than 182 Million published research articles, conference proceedings and e-books have been indexed into the iThenticate database by leading publishers, making it the world's largest comparison database.

  • 182M+ Articles, Chapters, Proceedings, etc.
  • 226K+ Books, Journals and Conference Proceedings, Abstracts


See Crossref Similarity Check publisher members, become a member, read articles about Crossref Similarity Check, sign up for a Crossref Similarity Check webinar, and see Crossref Similarity Check FAQs.

Read the Crossref Similarity Check user guide

Learn about Crossref Similarity Check's content intake system

Crossref® is a registered trademark of Publishers International Linking Association, Inc. (dba "Crossref").


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