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Best Plagiarism Checkers in 2026

Updated

31 plagiarism checkers ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.

31ranked
0free plans on this page
4 Oct 2026last checked
  1. 26

    JPlag

    5.6
    Web source matching
    No
    Academic source matching
    No
    RecognisedDocumentedFree planPlatforms
    About JPlagVisit site
  2. 27

    StrikePlagiarism

    5.6
    Web
    Free plan
    No
    Web source matching
    Yes
    Academic source matching
    Yes
    RecognisedDocumentedFree planPlatforms
    About StrikePlagiarismVisit site
  3. 28

    Turnitin AI Writing Detection

    5.6
    Web
    Free plan
    No
    Web source matching
    Yes
    Academic source matching
    Yes
    RecognisedDocumentedFree planPlatforms
    About Turnitin AI Writing DetectionVisit site
  4. 29

    Crossref Similarity Check

    5.5
    Web
    Free plan
    No
    Web source matching
    Yes
    Academic source matching
    Yes
    RecognisedDocumentedFree planPlatforms
    About Crossref Similarity CheckVisit site
  5. 30

    iThenticate

    5.5
    Web
    Free plan
    No
    Web source matching
    Yes
    Academic source matching
    Yes
    RecognisedDocumentedFree planPlatforms
    About iThenticateVisit site
  6. 31

    Plagiat.pl

    5.4
    Web
    Free plan
    No
    Web source matching
    Yes
    Academic source matching
    Yes
    RecognisedDocumentedFree planPlatforms
    About Plagiat.plVisit site

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