Top 5 best plagiarism checkers of 2021

Even if you are writing unique content to be published on any platform, there is a high chance that the words you are using have already been used by someone on a similar article or blog. This can leave your content vulnerable to being flagged for plagiarism, and the only solution to this dilemma is to check for plagiarism. Also, if you are hiring a freelance writer or intern to write content for a blog or website, you need to make sure that the content they submit is original.

That’s where Plagiarism Checking Tools Come in. They come in very handy for identifying even the most subtle of plagiarized content, whether on purpose or not. Such tools are very useful for both freelance content writers and editors and their employers.

In this article, we’re going to discuss some of the best Plagiarism Checking Tools, their features and prices; So, if you are looking for such tools as a writer or publisher, read on to find the best solution for you.



Duplichecker |  Best plagiarism checker
Duplichecker | Best plagiarism checker

Duplicates is not just one Plagiarism check tool, more of an all-in-one content curation and grammar suite that offers various services such as paraphrasing tool, grammar checker and reverse image search. The wide range of tools that Duplichecker has to offer makes it a perfect choice for content writers and editors. Plus, it’s as easy to use as pasting the piece of text into the browser and applying the necessary verification. Duplieker is also considered to be one of the best plagiarism checking tools.

Features of Duplichecker

  • Duplichecker offers a simple and user-friendly interface where you just paste the text into the browser and do the necessary verification.
  • It offers a full suite of features including Grammar check, Plagiarism checker, paraphrasing tool and reverse image search.
  • In addition, Duplichecker also offers tools for search engine optimization (SEO) such as text analysis, keyword research and the IP tool.
  • Duplichecker offers a number of functions for website management, including SEO score analysis, ping tool, rewriting tool and much more.
  • Duplichecker works with all popular formats of text files, including .txt, .tex, .doc, .docx, .pdf and others.

Prices for Duplichecker

Duplichecker offers custom prices that vary with the number of words you apply the exam to. Their plans vary from $ 5 a month offering 50 searches for 15,000 words to $ 200 a month offering 4,000 searches.


PaperRater |  Best plagiarism checker
PaperRater | Best plagiarism checker

PaperRater is an online Grammar, spelling and plagiarism check and proofreading tool for content writers and editors. Using advanced ML models, PaperRater instantly searches for plagiarism and grammatical errors while offering suggestions on what makes it the ultimate tool for proofreading content. In addition, the AI ‚Äč‚Äčengine Grendel provides you with valuable feedback and tips that you can incorporate into your work in order to achieve better results.

Features offered by PaperRater

  • PaperRater offers AI-powered tools that help with grammar checking, plagiarism detection and automatic evaluation.
  • With the help of ML models, PaperRater uses the most advanced grammar and spelling checker that uses context to find inconsistencies in the text.
  • PaperRater is an instant plagiarism checker that analyzes your text in seconds and gives you insights in seconds.
  • In addition, your content will be proofread to suggest better vocabulary usage, sentence analysis and readability.
  • In addition to grammar and spelling checks, PaperRater offers suggestions for sentence length, active / passive selection and the right phrases.

PaperRater prices

The basic plan is free and offers submission of 5 pages per submission and the premium plan costs $ 7.95 per month and offers up to 20 pages per submission.


Poster |  Best plagiarism checker
Poster | Best plagiarism checker

program is a free and popular one Plagiarism check toolthat delivers instant test results even with the longest documents. With Plagrams you can test the plagiarism detection without logging in and then log in depending on the result to find additional tools. In addition, the Academic Plagiarism Checker is scanned with approximately 80 million scientific articles and articles to give users the best results.

Functions of charts

  • With the Plagiarism analysis offered by plagrams, don’t just look for similar texts, but rate different ratings such as risks, paraphrases, quotations and matches.
  • Each detected plagiarism is highlighted in different colors in relation to its score, making it easy for authors to correct and prioritize.
  • The plagiarism checker adds links to the sources that match the analyzed text and makes it easier for authors to review.
  • Quotations can often be misjudged and flagged as plagiarism, so Plagramme efficiently checks for quotations to avoid such situations.
  • Plagrams offers multilingual recognition and checks for plagiarism, even if the text is written in several languages.


We needed everyone grammar At some point, maybe to hand in an English essay or story, but we have. Grammarly offers a plagiarism checker and other text analysis and content optimization tools for students and writers. It helps identify plagiarism from ProQuest databases and around 16 billion websites, which in itself speaks volumes. In addition, Grammarly covers sentence structure, punctuation, and vocabulary so you can get the most out of your work.

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Features of Grammarly

  • Grammarly offers a tone detector to help you hit the way you want to express yourself.
  • Grammarly scans content for plagiarism on billions of websites and even the most subtle.
  • You can analyze your text for grammar, punctuation, vocabulary, and more to make your article the best in class.
  • In addition to fixing spelling mistakes, Grammarly also suggests changes in your text that could add meaning and meaning to your work.
  • Make your text more readable with Grammarly and convert entire sentences to give them appropriate structure and meaning.



Unicheck is another immediate plagiarism check toolthat uses technical knowledge and an intuitive structure to detect plagiarism in texts. Unicheck is recognized and used by 1,100 academic institutions worldwide. It supports most of the file formats for Plagiarism detection and accepts bulk uploadswhile issuing detailed reports to check for potential plagiarism.

Functions offered by Unicheck

  • The data you upload to Unicheck is securely stored on regional servers and is subject to data security guidelines such as FERPA and GDPR.
  • Unicheck offers various tailor-made and flexible plans for educational institutions to ensure plagiarism checks on academic papers and articles by students.
  • Integrate the plagiarism scanner seamlessly and maintain the availability of the application at all times with the Amazon cloud hosting.
  • Unicheck will scan your pages and generate a report at the same time in just 25 seconds.
  • Unicheck also offers a simple API, an add-on for Google Docs, and custom integrations for efficient exams.

Unicheck prices

Unicheck offers bespoke pricing in three different tariffs, namely “Personal”, “K-12 and Higher Education” and “Business”. Both the Personal and Business plans range from $ 5 per month to $ 600 or more. The K-12 and College plan offers three different options, including the Essentials plan, Support Plus, and an Enterprise plan, depending on your needs.


What does a plagiarism checker do?

A plagiarism checker is a tool that analyzes and detects plagiarized content.

What percentage of plagiarism is acceptable?

Many magazines accept text similarities that are less than 15%.

What are some of the best plagiarism tools?

Duplichecker, Unicheck, and PaperRater are some of the best plagiarism tools.

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