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Best iThenticate Alternatives in 2026

Updated

20 apps from plagiarism checkers ranked against iThenticate on the same published basis.

  1. 1
    Noplag Free plan apiLinuxMacself-hostedWeb $9.99/mo6.7
    iThenticate vs Noplag
  2. 2
    Dolos Free plan apiLinuxself-hostedWebWin Free6.5
    iThenticate vs Dolos
  3. 3
    Plagiarism Detector Free plan WebWin Free6.5
    iThenticate vs Plagiarism Detector
  4. 4
    Copyscape Free plan apiself-hostedWeb $4.95/mo6.4
    iThenticate vs Copyscape
  5. 5
    Crossref Similarity Check apiWeb $3.33/mo6.4
    iThenticate vs Crossref Similarity Check
  6. 6
    MOSS Free plan LinuxWeb Free6.4
    iThenticate vs MOSS
  7. 7
    Originality.ai Free plan apiextensionWeb $12.95/mo6.4
    iThenticate vs Originality.ai
  8. 8
    PlagAware Free plan apiWeb €2.99/mo6.4
    iThenticate vs PlagAware
  9. 9
    Plagiarism Checker X Free plan Win Free6.4
    iThenticate vs Plagiarism Checker X
  10. 10
    Plagiarisma Free plan WebWin Free6.4
    iThenticate vs Plagiarisma
  11. 11
    Quetext AI Detector Free plan apiextensionWeb $7.99/mo6.4
    iThenticate vs Quetext AI Detector
  12. 12
    SmallSEOTools Plagiarism Checker Free plan apiextensionWeb $7.84/mo6.4
    iThenticate vs SmallSEOTools Plagiarism Checker
  13. 13
    JPlag Free plan apiLinuxself-hosted Free6.3
    iThenticate vs JPlag
  14. 14
    PrePostSEO Plagiarism Checker AndroidapiiOSMacWeb $0.35/mo5.8
    iThenticate vs PrePostSEO Plagiarism Checker
  15. 15
    Smodin Plagiarism Checker AndroidapiextensioniOSWeb $10/mo5.6
    iThenticate vs Smodin Plagiarism Checker
  16. 16
    Compilatio AI Detector Free trial apiWeb 5.5
    iThenticate vs Compilatio AI Detector
  17. 17
    Copyleaks AI Detector Free trial apiextensionWeb $1.17/mo5.5
    iThenticate vs Copyleaks AI Detector
  18. 18
    DupliChecker apiWeb $9.99/mo5.4
    iThenticate vs DupliChecker
  19. 19
    Plag Web €14.95/mo5.4
    iThenticate vs Plag
  20. 20
    PlagiarismCheck.org apiextensionWeb 5.4
    iThenticate vs PlagiarismCheck.org

iThenticate alternatives compared

#AppScoreFree planFromRuns on
1Noplag6.7Free plan$9.99/moAPI, Linux, Mac, self-hosted, Web, Windows
2Dolos6.5Free planFreeAPI, Linux, self-hosted, Web, Windows
3Plagiarism Detector6.5Free planFreeWeb, Windows
4Copyscape6.4Free plan$4.95/moAPI, self-hosted, Web
5Crossref Similarity Check6.4$3.33/moAPI, Web
6MOSS6.4Free planFreeLinux, Web
7Originality.ai6.4Free plan$12.95/moAPI, Browser, Web
8PlagAware6.4Free plan€2.99/moAPI, Web
9Plagiarism Checker X6.4Free planFreeWindows
10Plagiarisma6.4Free planFreeWeb, Windows
11Quetext AI Detector6.4Free plan$7.99/moAPI, Browser, Web
12SmallSEOTools Plagiarism Checker6.4Free plan$7.84/moAPI, Browser, Web
13JPlag6.3Free planFreeAPI, Linux, self-hosted
14PrePostSEO Plagiarism Checker5.8$0.35/moAndroid, API, iOS, Mac, Web, Windows
15Smodin Plagiarism Checker5.6$10/moAndroid, API, Browser, iOS, Web
16Compilatio AI Detector5.5API, Web
17Copyleaks AI Detector5.5$1.17/moAPI, Browser, Web
18DupliChecker5.4$9.99/moAPI, Web
19Plag5.4€14.95/moWeb
20PlagiarismCheck.org5.4API, Browser, Web
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Questions about iThenticate alternatives

What is the best alternative to iThenticate?

Noplag, number 1 in plagiarism checkers with a score of 6.7 out of 10. The others here: Dolos, Plagiarism Detector, Copyscape and 16 more.

What is the best free alternative to iThenticate?

Noplag is the best-ranked alternative with a free plan. 12 of the 20 alternatives here publish a free plan on their own pricing pages.

How are these alternatives ranked?

Ranked free-and-open first: a usable free tier and open-source code, then the platforms it runs on and its documentation.