Freedom251
For vendors
AdvertiseTop spots, featured rows, home sponsor Get listedAdd a product we don't cover yet Claim a listingFree: verify the domain, then correct your page Vendor dashboardNumbers, orders and placements
Vendor dashboard

Best PrePostSEO Plagiarism Checker Alternatives in 2026

Updated

20 apps from plagiarism checkers ranked against PrePostSEO Plagiarism Checker on the same published basis.

  1. 1
    Noplag Free plan apiLinuxMacself-hostedWeb $9.99/mo6.7
    PrePostSEO Plagiarism Checker vs Noplag
  2. 2
    Dolos Free plan apiLinuxself-hostedWebWin Free6.5
    PrePostSEO Plagiarism Checker vs Dolos
  3. 3
    Plagiarism Detector Free plan WebWin Free6.5
    PrePostSEO Plagiarism Checker vs Plagiarism Detector
  4. 4
    Copyscape Free plan apiself-hostedWeb $4.95/mo6.4
    PrePostSEO Plagiarism Checker vs Copyscape
  5. 5
    Crossref Similarity Check apiWeb $3.33/mo6.4
    PrePostSEO Plagiarism Checker vs Crossref Similarity Check
  6. 6
    MOSS Free plan LinuxWeb Free6.4
    PrePostSEO Plagiarism Checker vs MOSS
  7. 7
    Originality.ai Free plan apiextensionWeb $12.95/mo6.4
    PrePostSEO Plagiarism Checker vs Originality.ai
  8. 8
    PlagAware Free plan apiWeb €2.99/mo6.4
    PrePostSEO Plagiarism Checker vs PlagAware
  9. 9
    Plagiarism Checker X Free plan Win Free6.4
    PrePostSEO Plagiarism Checker vs Plagiarism Checker X
  10. 10
    Plagiarisma Free plan WebWin Free6.4
    PrePostSEO Plagiarism Checker vs Plagiarisma
  11. 11
    Quetext AI Detector Free plan apiextensionWeb $7.99/mo6.4
    PrePostSEO Plagiarism Checker vs Quetext AI Detector
  12. 12
    SmallSEOTools Plagiarism Checker Free plan apiextensionWeb $7.84/mo6.4
    PrePostSEO Plagiarism Checker vs SmallSEOTools Plagiarism Checker
  13. 13
    JPlag Free plan apiLinuxself-hosted Free6.3
    PrePostSEO Plagiarism Checker vs JPlag
  14. 15
    Smodin Plagiarism Checker AndroidapiextensioniOSWeb $10/mo5.6
    PrePostSEO Plagiarism Checker vs Smodin Plagiarism Checker
  15. 16
    Compilatio AI Detector Free trial apiWeb 5.5
    PrePostSEO Plagiarism Checker vs Compilatio AI Detector
  16. 17
    Copyleaks AI Detector Free trial apiextensionWeb $1.17/mo5.5
    PrePostSEO Plagiarism Checker vs Copyleaks AI Detector
  17. 18
    DupliChecker apiWeb $9.99/mo5.4
    PrePostSEO Plagiarism Checker vs DupliChecker
  18. 19
    Plag Web €14.95/mo5.4
    PrePostSEO Plagiarism Checker vs Plag
  19. 20
    PlagiarismCheck.org apiextensionWeb 5.4
    PrePostSEO Plagiarism Checker vs PlagiarismCheck.org
  20. 21
    PlagiarismSearch Free trial apiextensionWeb $27.95/mo5.4
    PrePostSEO Plagiarism Checker vs PlagiarismSearch

PrePostSEO Plagiarism Checker 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
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
21PlagiarismSearch5.4$27.95/moAPI, Browser, Web
Make your app an alternative to PrePostSEO Plagiarism Checker

The sponsored alternative slot on this page is labelled Sponsored.

See the price

Questions about PrePostSEO Plagiarism Checker alternatives

What is the best alternative to PrePostSEO Plagiarism Checker?

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 PrePostSEO Plagiarism Checker?

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.