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Best Red Paper Alternatives in 2026

12 apps from plagiarism checkers ranked against Red Paper on the same published basis.

  1. 1
    Noplag Free plan apiLinuxMacself-hostedWeb $9.99/mo7.3
    Red Paper vs Noplag
  2. 2
    PlagAware Free plan apiWeb €2.99/mo7.0
    Red Paper vs PlagAware
  3. 3
    PrePostSEO Plagiarism Checker AndroidapiiOSMacWeb $0.35/mo6.9
    Red Paper vs PrePostSEO Plagiarism Checker
  4. 4
    Quetext AI Detector Free plan apiextensionWeb $7.99/mo6.9
    Red Paper vs Quetext AI Detector
  5. 5
    SmallSEOTools Plagiarism Checker Free plan apiextensionWeb $7.84/mo6.9
    Red Paper vs SmallSEOTools Plagiarism Checker
  6. 6
    Originality.ai Free plan apiextensionWeb $12.95/mo6.8
    Red Paper vs Originality.ai
  7. 7
    Plagiarisma Free plan WebWin Free6.8
    Red Paper vs Plagiarisma
  8. 8
    Smodin Plagiarism Checker AndroidapiextensioniOSWeb $10/mo6.5
    Red Paper vs Smodin Plagiarism Checker
  9. 9
    PlagiarismSearch Free trial apiextensionWeb $27.95/mo6.4
    Red Paper vs PlagiarismSearch
  10. 10
    Plagius Free trial MacWebWin $0.41/mo6.4
    Red Paper vs Plagius
  11. 11
    PlagiarismCheck.org apiextensionWeb 6.3
    Red Paper vs PlagiarismCheck.org
  12. 12
    Viper Web 6.3
    Red Paper vs Viper
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