Best Plagiarism Checker for Research Papers and Thesis – Free and Paid

Plagiarism Checkers Mentioned Below

  • Turnitin (Only registered students and researchers can use it)
  • Plagiarism Checker X (Available in 7 different languages; Used by top Universities and companies)
  • Grammarly (Grammar checker and Plagiarism detection tool; Now available on Mac too)
  • (Free Google scholar search tool)
  • ProWritingAid (Plagiarism and Grammar error correction; Loved by Millions of Authors and Writers)
  • Urkund (Another good alternative to Turnitin, only for Institutes)

Plagiarism checking in research papers may be more daunting than a website, which is actually true to an extent. Where you can have a fair excuse and the luxury of <blockquote>, which help other search engines to know that you have copied, you don’t have such an option here. Here we are writing about the best methods and tools to prevent plagiarism in research work.

Plagiarism is unacknowledged copying or an attempt to misattribute original authorship, whether of ideas, text or results.


There can be several ways to plagiarize your hard-worked content. We have already talked a lot about accidental plagiarism and ways to protect it in our previous articles.

Here you can test your knowledge by taking a simple plagiarism quiz which will help you to understand and avoid plagiarism in a better manner.

Other is, as you know, intentionally. No matter, how are you messing up with the act, it will be equally offensive.

plagiarism checker for thesis and research
Tools for plagiarism checking in research

Ways to Avoid Plagiarism in Research Work

  • The best way to stay original is: staying original. Don’t get me wrong. All I want to say is, think with your own imagination. Paraphrasing is actually detectable if it is not done properly. Also, if you are doing it, you should not forget to add an in-text citation properly.
  • Another important thing is to keep track of your work from the very beginning of your work. You can use cloud services like Evernote and Pocket to keep track of URLs, PDFs, Blogs, Websites, and Other Works.
  • Unorganized papers often lead to plagiarism. You should be very careful while copying word-by-word. You can use “Quotes” to highlight the part which is copied with a source.
  • Never trust Free services. Writing about the thousandth time, Do not use free tools. They will only lead you to false results and the risk of getting plagiarized with your own work. Paying someone to check your work on Turnitin will only lend you to hazard.
  • If Your paper is an assignment, always do everything as instructed by the professor.

Best Plagiarism Checker Tools for Research and Thesis

Without any doubt, Turnitin is a great tool to detect a similarity between the strings, whether it is a research work or an assignment. It has a huge database of research work and it is capable to find similarity in your content with the previous works. A common myth about Turnitin is that it is a perfect tool. It is Not! Also, it is not a deciding tool that you have actually plagiarized. Instead, it shows results to your professors for possible similarity among previously submitted work. That depends on the setting teachers are using. Only the examiner and you (human) can judge whether you have plagiarized or not.

Plagiarism Checker X is the best alternative to Turnitin for many reasons. It provides some of the coolest features for students and professors. Some of them are bulk uploading, side-by-side comparison, automatic citation and multiple language support. It is the only tool on the planet which provides offline check after two consecutive checks.

You can play with the free version to test the waters before going for a premium one which is also available for less than $40 for a lifetime. It is being used by several universities and top companies as their standard tool.

Supports All Windows Platforms

Grammarly is one of the biggest companies working closely in education and industry. Hundreds of companies, schools, and universities are using Grammarly for proofreading, plagiarism checking, and learning English Grammar. They have a great database and constantly learning algorithms that are becoming better with time.

Not to forget, Grammarly is a safe tool (forget rumors) and they don’t sell your data to anybody. With the provided browser extension, Android support, and native applications, it gives much power to you as an academician.

Supports macOS, Android, iOS, Windows, Google docs, and have a web application.

After a considerable amount of research, I came to the only Free tool which is safe to be used for research work. It uses Google Scholar search results to detect similarities in your content. is able to detect more than 10 billion (as they claim) search engine results and it can be used from their website as well via their Windows application. But take this advice with a grain of salt.

Supports Windows only.

Loved by some of the best selling writers, ProWritingAid is a decent grammar editor and contextual writing editor. In the premium version of the software, which is available on Apple devices, Windows, Google Doc, and Scrivener, has an integrated plagiarism checker.

ProWritingAid comes with fair pricing and great features, it can be on your radar if you are looking for a plagiarism checker for avoiding accidental pitfalls.

  • MOSS

    (Measure of Software Similarity)

Here is a tool that is very specific to the task. MOSS is the (perhaps) best possible plagiarism checker ever created to detect plagiarism in software codes and programs. It was created in the Stanford labs in 1994. Since its inception, it is being used in several classrooms and research works to detect similarity in codes.

Bottom Line

The best way to protect your research is to keep it confidential. The above tools are tested and provide at most security to your data. Plagiarism can ruin your career and is unbearably frustrating. I hope the above tools will help you to write better assignments and get better grades.

Best wishes.

  • Useful advices and good suggestions. There are many other tools you could also mention in the article which you didn’t. but I think that would be for good

    Better than the last one.

  • Plagiarism has made me sick. (literally)
    I am thinking about PlagiarismCheckerX.

  • What do you think about Edubirdie and Unicheck? Can they be trusted?

  • mainadmin says:

    Thanks for your comment, Josh!

    If you are a windows user there should not be any problem with the native application. If you are using a web interface, that means you are uploading your data to their servers. This is not the case with PCX. Your content remains on your machine here.

    Thanks again.

  • Incredible points. Outstanding arguments. Keep up the amazing work.

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  • I am using x-plagiarism checker, it is a wonderful tool.

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