Professional plagiarism checker that reviews over 14 trillion web pages, articles, books, and periodicals to help you detect possible plagiarism in your papers. It finds not only copy paste plagiarism, but paraphrasing, good and bad citations.


Dupli Checker is described as 'Premium-quality SEO and text analysis tools' and is a SEO tool in the business & commerce category. There are more than 50 alternatives to Dupli Checker, not only websites but also apps for a variety of platforms, including Mac, Windows, SaaS and Google Chrome apps. The best Dupli Checker alternative is HubSpot, which is free. Other great sites and apps similar to Dupli Checker are Semrush, Odrin AI Content Detector, ahrefs and SEO PowerSuite.
Professional plagiarism checker that reviews over 14 trillion web pages, articles, books, and periodicals to help you detect possible plagiarism in your papers. It finds not only copy paste plagiarism, but paraphrasing, good and bad citations.


PlagiarismCheck.org helps educators and students all around the world to support academic honesty.




For over two decades, companies worldwide have trusted Copyscape as the industry standard for enterprise-class online plagiarism detection. Copyscape is used by the world’s leading companies in publishing, Gen-AI, content marketing, SEO, education, research and more.


The Internet makes plagiarism a bigger problem than ever. Now you can turn the tables on them and find the "forgotten" sources! You no longer have to try single sentences in search engines:

Oxford similarity checker (OxSiC) is a professional plagiarism checker designed for bloggers, teams and individuals. This tool has very attractive pricing model charging only 1c per 100 words checked, what makes it the best priced plagiarism checking tool on the market.

Novus Scan is a tool for teachers, editors and writers, enabling you to find text that has been copied between documents. Novus Scan will compare text to the documents in your database and show you any matching text.




CopyDetect is an online plagiarism checker that helps writers, students, bloggers and businesses keep their content 100% original. You can paste text, upload documents or check live URLs to find duplicated content before publishing.



Plagiarism Checker by Quetext. Our proprietary DeepSearch™ plagiarism checker searches for similarities across billions of documents
For academic integrity, we've adopted a premium model specifically trained to identify AI-authored essays masquerading as student writing.




Detect plagiarized AI text within seconds with a free AI detector! Offering a reliable AI checker to ensure AI or a human writes your content.



AI Detector is the perfect tool for content creators who want to ensure their content is authentic, as well as for students and teachers who want to stay ahead of the game. With AI Detector you can avoid being penalized by social media and search engines.



