Plagiarism Detection

Copyscape

The Original and Best Plagiarism Checker.

Web-based plagiarism checker primarily used by content owners to detect online content theft.

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Grammarly

Great Writing, Simplified.

AI-powered writing assistant with a robust plagiarism checker.

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Scribbr

Your path to academic success.

An academic service provider offering a plagiarism checker, proofreading services, and a citation generator.

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Writer.com

The full-stack generative AI platform for enterprises.

An enterprise-focused AI writing platform that includes content generation, style guide enforcement, and plagiarism checking.

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Unicheck

Your partner in originality.

A cloud-based plagiarism checker for education and business, known for its LMS integrations and detailed reports.

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Originality.ai

The Most Accurate AI & Plagiarism Checker for Serious Content Publishers.

A tool designed for content creators that provides highly accurate AI detection and plagiarism checking.

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ProWritingAid

A grammar checker, style editor, and writing mentor in one package.

A comprehensive writing tool that includes grammar checking, style editing, and a plagiarism checker.

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GPTZero

The most accurate AI detector.

An AI detector that also provides a plagiarism checker to verify originality against both AI and human sources.

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Quetext

The smart way to check for plagiarism.

A plagiarism checker using DeepSearch™ technology to provide fast, accurate, and intuitive results.

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Turnitin

Empowering original thinking and authentic learning.

Comprehensive plagiarism detection, feedback, and grading solution for educational institutions.

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Copyleaks

Confidence in the age of AI.

An AI-powered plagiarism and AI content detector for education and enterprise.

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Ouriginal

Plagiarism prevention made easy.

A text-matching software that combines plagiarism detection with authorship verification to promote academic integrity.

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PlagScan

Your Plagiarism Checker.

A plagiarism detection software for academic and business users, now part of the Ouriginal and Turnitin family.

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PlagiarismCheck.org

An accurate plagiarism checker for teachers and students.

A plagiarism detection tool focused on the education sector with deep LMS integrations.

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Compilatio

Plagiarism detection and prevention.

A comprehensive plagiarism detection solution for educational institutions, focusing on prevention and pedagogical support.

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PrePostSEO Plagiarism Checker

A free online plagiarism checker to check for plagiarism.

A free plagiarism checker that is part of a large suite of content optimization and SEO tools.

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DupliChecker

Free Plagiarism Checker.

A free online toolkit that includes a plagiarism checker, grammar check, and various SEO tools.

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Plagium

A leading innovator in plagiarism checking.

An online plagiarism checker offering quick searches and in-depth analysis for various user types.

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SmallSEOTools Plagiarism Checker

100% Free Plagiarism Detector.

A widely-used free online plagiarism checker that is part of a large suite of SEO and content tools.

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Viper

The simple, accurate and affordable plagiarism checker.

An online plagiarism scanner popular with students, offering detailed reports by checking against billions of online sources.

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PaperRater

Free Online Proofreader with Grammar Check, Plagiarism Detection and more.

An online tool that provides grammar checking, writing suggestions, and plagiarism detection using AI.

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PlagTracker

Online Plagiarism Checker for Students, Teachers, and Writers.

A Ukrainian-based online plagiarism detection service launched in 2011.

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CheckForPlagiarism.net

Trusted by thousands of students, teachers, writers and professionals.

A plagiarism checking service that scans documents against billions of online and academic sources.

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Moss (Measure of Software Similarity)

A System for Detecting Software Plagiarism.

A free, automated system for detecting plagiarism in programming code.

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Plagiarism Detector

Detect Plagiarism in your Content.

A free online tool for detecting plagiarism in articles, essays, and other documents.

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NoPlag

Plagiarism Checker for Students and Teachers.

An online plagiarism checker that offers services for individuals, educational institutions, and businesses.

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PlagAware

Professional Plagiarism Search Engine.

A plagiarism checker for academic and business use, offering detailed reports and text monitoring.

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Pre-Post SEO Plagiarism Checker

Free Online Plagiarism Checker.

A free plagiarism checker that is part of a large suite of tools for SEO, writing, and website management.

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