Alternatives to Plagiarism Checker X

18.3

Noplag

Noplag is an open-source plagiarism checker, with a hosted cloud service and an engine released under Apache 2.0.

Free planOpen sourceWebAPILinux

From $9.99 a month

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28.0

PL

Plagiarisma

Plagiarisma is an originality checker that scans text against web sources, books, and academic papers.

Free planAndroidWebAPI

From $99 a year

VisitDetails

37.7

DO

Dolos

Dolos is a free, open-source tool for finding similarities between source-code submissions, particularly for teachers reviewing programming tests,…

Free planOpen sourceWebAPILinux

Free plan

VisitDetails

4. 4

   Originality.ai

   Originality.ai offers tools for checking AI-generated text, plagiarism, facts, readability, grammar, spelling, and content quality.

   Free planWebAPIExtension
   7.6From $12.95 a month
   Visit
5. 5CO

   Copyscape

   Copyscape checks web content and newly created human- or AI-generated text for plagiarism and duplicate material found online.

   Free planWebAPISelf-hosted
   7.5From $4.95 a month
   Visit
6. 6

   PlagAware

   PlagAware is a plagiarism search engine for educational institutions, businesses and individuals.

   Free planWebAPI
   7.4Free plan
   Visit
7. 7

   Copyleaks AI Detector

   Copyleaks AI Detector identifies AI-written text, including text blended with human writing.

   WebAPIExtensionSelf-hosted
   7.2
   Visit
8. 8SP

   SmallSEOTools Plagiarism Checker

   SmallSEOTools Plagiarism Checker compares submitted writing with online material and returns a report showing where matches appear.

   Free planWebAPIExtension
   6.9From $94.08 a year
   Visit
9. 9

   DrillBit

   DrillBit is an AI-powered platform for plagiarism detection and content integrity.

   AndroidiOSWebAPI
   6.8$5 one-time
   Visit
10. 10PL

    Plagius

    Plagius analyzes academic papers and other documents for possible plagiarism by checking the internet or local files.

    WebmacOSWindows
    6.8From $58.80 a year
    Visit
11. 11

    PrePostSEO Plagiarism Checker

    PrePostSEO Plagiarism Checker checks submitted text for copied or duplicate content and reports plagiarism and unique-content percentages alongside…

    AndroidiOSWebAPI
    6.8From $7.50 a year
    Visit
12. 12

    Quetext AI Detector

    Quetext AI Detector analyzes writing for signs of AI-generated text and displays line-by-line results with a confidence score.

    Free planWebAPIExtension
    6.8From $7.99 a month
    Visit
13. 13

    Smodin Plagiarism Checker

    Smodin Plagiarism Checker compares submitted text with web and academic material, then returns similarity scores, matched source links, and…

    AndroidiOSWebAPI
    6.8From $10 a month
    Visit
14. 14CS

    Crossref Similarity Check

    Crossref Similarity Check helps eligible Crossref members identify potential plagiarism by comparing manuscripts with published academic and general web content.

    Free planWebAPI
    6.6Free plan
    Visit
15. 15

    PlagiarismSearch

    PlagiarismSearch checks submitted text against selected web, archived, publication, academic, and enabled organizational sources.

    WebAPIExtension
    6.4From $27.95 a month
    Visit
16. 16

    StrikePlagiarism

    StrikePlagiarism is an academic integrity system for finding text similarity, paraphrasing, and AI-generated content.

    WebAPISelf-hosted
    6.4$2.50 one-time
    Visit
17. 17

    Plagiarism Detector

    Plagiarism Detector checks documents for plagiarism and AI-generated content, then produces originality reports.

    Free planWebWindows
    6.3Free plan
    Visit
18. 18

    PlagiarismCheck.org

    PlagiarismCheck.org checks text originality, verifies authorship, detects AI-generated content, and provides writing checks.

    WebAPIExtension
    6.2$5.99 one-time
    Visit
19. 19DU

    DupliChecker

    DupliChecker is an online collection of SEO and text analysis tools, including a plagiarism checker that assesses the originality of text.

    WebAPI
    6.1From $9.99 a month
    Visit
20. 20IT

    iThenticate

    WebAPI
    6.1$125 one-time
    Visit
21. 21MO

    MOSS

    MOSS measures program similarity and has primarily been used to identify possible plagiarism in programming classes.

    Free planWebLinux
    6.1Free plan
    Visit
22. 22

    Scribbr Plagiarism Checker

    Scribbr Plagiarism Checker is a web service for comparing academic work with online and published sources.

    Web
    6.1$19.95 one-time
    Visit
23. 23VI

    Viper

    Viper is a web app for checking documents for plagiarism and AI-generated content.

    Web
    6.1£5 one-time
    Visit
24. 24JP

    JPlag

    JPlag is a free, open-source tool that identifies pairwise similarities among programs to help detect source-code plagiarism and collusion.

    Free planAPILinuxSelf-hosted
    5.9Free plan
    Visit
25. 25

    Plag

    Plag is a web platform for detecting plagiarism and AI-generated writing.

    Web
    5.9From €14.95 a month
    Visit
26. 26PP

    Plagiat.pl

    Web
    5.9
    Visit
27. 27

    Plagramme

    Plagramme is a web-based multilingual platform for detecting text similarity and preventing plagiarism.

    Web
    5.9From $14.95 a month
    Visit
28. 28TA

    Turnitin AI Writing Detection

    Web
    5.4
    Visit
29. 29RP

    Red Paper

    Web
    5.2
    Visit
30. 30CM

    Compilatio Magister+

    Web
    4.7
    Visit

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