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27 alternatives · from plagiarism detection software

Alternatives to Plagium

Plagium suits people who need text similarity analysis alongside a separate AI Detector. It compares submissions with public, private, proprietary and third-party sources, links matches to originals, and supports Word, PDF and native text uploads through Deep Search. Google Drive, a Google Docs Add-on, institutional API access and business-system integrations extend its document workflows. Android, iOS and web access broaden where you can use it. A free account costs…

18.3
Noplag logo

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
VisitDetails
28.0

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

Free planAndroidWebAPI
From $99 a year
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37.7

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
  1. 4Originality.ai logo

    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
  2. 5

    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
  3. 6GPTZero logo

    GPTZero

    GPTZero identifies likely AI-generated writing and highlights potential AI use at document, sentence, and word level.

    Free planWebAPIExtension
    7.5From $8.33 a month
    Visit
  4. 7

    JPlag

    JPlag compares programs with one another to identify pairwise similarities that may indicate source-code plagiarism or collusion.

    Free planOpen sourceWebAPILinuxmacOS
    7.5Free plan
    Visit
  5. 8Winston AI logo

    Winston AI

    Winston AI detects AI-generated text and images and includes plagiarism checking and other content-integrity tools.

    Free planWebAPIExtensionSelf-hosted
    7.5From $189 a month
    Visit
  6. 9Copyleaks AI Detector logo

    Copyleaks AI Detector

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

    WebAPIExtensionSelf-hosted
    7.2
    Visit
  7. 10

    Noplag Engine

    Noplag Engine is an open-source tool for finding verbatim and near-verbatim matches against a corpus you control.

    Free planWebAPILinuxmacOS
    7.1From $9.99 a month
    Visit
  8. 11

    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. 12DrillBit logo

    DrillBit

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

    AndroidiOSWebAPI
    6.8$5 one-time
    Visit
  10. 13Pangram logo

    Pangram

    Pangram checks text and images for AI-generated content and also offers plagiarism detection.

    Free planWebAPIExtension
    6.8From $20 a month
    Visit
  11. 14

    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
  12. 15Quetext AI Detector logo

    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. 16Codequiry logo

    Codequiry

    Codequiry checks submitted source code for plagiarism and AI-generated code, helping educators verify student work.

    WebAPILinuxmacOS
    6.7From €25.76 a month
    Visit
  14. 17PlagiarismCheck.org logo

    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
  15. 18

    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
  16. 19

    iThenticate

    WebAPI
    6.1$125 one-time
    Visit
  17. 20

    MOSS

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

    Free planWebLinux
    6.1Free plan
    Visit
  18. 21

    PlagPointer

    PlagPointer is a web service that checks documents for plagiarism and AI content in one scan.

    Web
    6.1
    Visit
  19. 22Scribbr Plagiarism Checker logo

    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
  20. 23

    PlagiarismDetector.net

    PlagiarismDetector.net is an online service for checking plagiarism and similarity in text.

    WebAPIExtension
    6.0From $9.99 a month
    Visit
  21. 24

    Plag.ai

    Plag.ai is a web service for plagiarism checking, AI-text detection, and translated-plagiarism analysis.

    Web
    5.9From €14.95 a month
    Visit
  22. 25

    WINNOWR

    WINNOWR is a CPU-first engine for identifying potential web-source matches in student writing and other long-form text.

    WebAPILinuxSelf-hosted
    5.7
    Visit
  23. 26Codeleaks logo

    Codeleaks

    WebAPISelf-hosted
    5.3
    Visit
  24. 27

    Turnitin Similarity

    Web
    4.6
    Visit

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