While working on the research papers and thesis, it is common to come up with plagiarism in your writing. After all, when certain terms and slightly inappropriate citations are also marked as plagiarized content, it is really hard to maintain things during writing. However,  just because of such little mistakes, losing marks is almost unbearable. Hence, plagiarism checker tools play a significant role in such situations.

As you are dealing with thesis and research papers, it would be risky to go on with any free random plagiarism checker around the internet. Undoubtedly, there are a great number of similar services available on the internet today. Not to mention that all of them can be trusted. The risk is not only about the inaccuracy of the tools, but some of these services actually resell your data to others. In such a case, all your hard work could simply go to waste.

List of Best Plagiarism Checker for Research Papers and Thesis

Being a student myself, I face plenty of problems before assigning my thesis of the project to my superiors, who do not accept plagiarized work. So, I have come up with some of the best plagiarism checkers for thesis and research work that are extremely genuine and offers a fully secured and trusted service.

1. Grammarly

Grammarly Plagiarism Checker

Grammarly has now been a very popular name among students, universities, companies, and various organizations. Just as the name suggests, it is a grammar checker and proofreading tool, with highly advanced algorithms constantly learning over time to improve and develop themselves.

Not to neglect, the Grammarly Plagiarism checker is a powerful option on the list. It processes and calculates the amount of plagiarism in your article with a great accuracy level. Grammarly even works online now with a chrome extension.

While the free plagiarism checker only notifies you if there is any plagiarism found in the article or not. The premium version, on the other hand, offers detailed reports along with references, advanced feedback, and corrections for your writing.

Apart from this, Grammarly is a 100% safe and secured tool used and trusted by many all over the world. And the best feature I like about Grammarly is its ability to retain document formatting even after plagiarism check and grammar correction. Truly a writing tool for anyone indeed.

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2. ProWritingAid


Pro-Writing Aid is best known as a grammar checker and style editor. I love Pro-writing aid because of its built-in grammar correct functionalities and one-click error correction. However, the software has got a bunch of additional features, some of which are not available in any other grammar checking tool. It includes both free and pro versions. But Pro-Writing Aid plagiarism checker tool is only available with the paid version of the software. The plagiarism checker is handy and comes with a user-friendly interface.

More importantly, you can either use the plagiarism checker through their online editing tool, or else they also offer a Microsoft Word Add-in. Pro-Writing Aid takes complete care of your security and never stores, share, or resell your text to any other third party.

The best part I found about this tool is it comes at some very flexible and affordable pricing, and you also get to a lot of extra features in addition to the plagiarism checker that helps you enhance the quality of your research reports.

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3. Plagiarism Checker X

Plagiarism Checker X

Plagiarism Checker X is the ultimate tool for students, teachers, publishers, and marketers. It seamlessly checks for plagiarism in your research papers, assignments, thesis, blogs, and more. The most impressive thing about this tool is its lightning speed, just like Quetext. The basic version of the tool is available for free. However, Plagiarism Checker X also offers a Professional and Business plan, which is worth a decent amount.

Interestingly, this tool is even considered a strong alternative to Turnitin in terms of certain features. The installation of the software is pretty simple, and it provides you with all the essential information in an organized manner. Besides, what I find crazy about this device is it offers a lifetime subscription at just $40.

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4. Turnitin


Turnitin is surely one of the most reliable ways to check for the plagiarism of your thesis papers and research works. They offer a completely secured platform and have a huge database that makes it one of the powerful plagiarism checker. However, the software is exclusively available to universities, companies, and organizations.

The universities buy the subscription and provide access to the students and instructors. Besides, Turnitin is very simple to use. All you need to do is log in to your account and join any active class using your Class ID and Class Enrollment key provided by the instructor. Next, just upload your research file and wait until your report is being generated.

I personally prefer Turnitin because it allows you to upload the whole document at once rather than copy-pasting your text. It’s important when you’re handing over your report and have to stick with a prescriber format.

Moreover, the software supports various file formats, so you will never encounter any issues even if you upload a doc, txt, or PDF file. Although it takes some amount of time to process for plagiarism, the report it generates is absolutely genuine and trustworthy.

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5. Quetext Plagiarism Checker

Quetext Plagiarism Checker

Quetext is not very popular but as per my experience, it’s one of the best plagiarism checkers if you’re looking to cross-check your thesis or paper. With its simple, elegant, and intuitive plagiarism checker tool, it makes your work a lot easier. It offers both free as well as premium versions with an affordable subscription plan charged on a monthly basis.

The free version offers most of the essential stuff such as color grade, contextual analysis, fuzzy matching, conditional scoring, and plagiarism checking up to 2,500 words.

However, if you want it for the purpose of detecting plagiarism for your thesis papers, I would recommend going for the premium plan. It offers a few extra features like the DeepSearch Extended, custom URL exclusion, downloadable originality report, and most importantly, increases the word limit to 1,00,000. Quetext holds a good record in terms of maintaining accuracy and, of course, one of my favorites, especially at times of rush.

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6. Ithenticate.com


iThenticate is a professional-grade plagiarism checker used and trusted by world-class researchers, scholars, and publishers. It is so far the most accurate plagiarism detecting tool I have ever seen. You can check for plagiarism in your thesis papers and research works by directly uploading the file on the official website of iThenticate. No doubt, it offers a secure environment to work on.

The most comforting part of this tool is its easy usability. iThenticate features a very simple interface, along with a powerful algorithm. Once you upload your file to the server, it will take a moment to process the document and will display the overall plagiarism percentage.

You can also view the detailed report by opening the file in a new window. The right-hand side displays your work with the plagiarized sentences being highlighted in different colors. On the right side of the screen, you can see the match overview report containing the reference names and percentage of plagiarism.

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Surely none of us would like to face rejection after putting a tremendous amount of time and effort into writing our thesis papers just for the sake of some plagiarized content. Luckily, these plagiarism checkers do the best job in finding out copied contents peculiarly fast.

From my own experience, if you are absolutely concerned about your work, I would recommend you go for iThenticate or Grammarly Premium. However, the rest, such as Pro-Writing Aid and Turnitin, does an impeccable job too. Let us know about your favorite Plagiarism Checker in the comments below.


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