5+ best plagiarism checker software for PC

Radu Tyrsina
by Radu Tyrsina
CEO & Founder
Radu Tyrsina has been a Windows fan ever since he got his first PC, a Pentium III (a monster at that time). For most of the kids of his age, the Internet was an... Read more
Affiliate Disclosure
  • If your work depends on the original content, it is important to use the one of the best anti-plagiarism software.
  • A plagiarism checker software is primarily an app that helps you prevent plagiarism and properly protect your copyrights.
  • We have carefully selected the entries in this guide to help you choose the best plagiarism checker for your needs.
  • An authentic content will not be able to be overlooked by search engines, which you can use to improve your marketing strategy!
plagiarism checkers

Plagiarism checker software helps you verify the quality of your writing to make sure it’s original content. These tools are indispensable to SEO marketing, journalism, researching, and academics.

If you’re a freelance writer, for example, you need professional software to detect plagiarism. Otherwise, copied materials can become your downfall.

Copyright laws are very strict in most places and if you don’t focus on the originality of your content, you risk facing harsh consequences such as getting discredited if you are an academic, or a get search engine ban if you work online.

Even though you try your best to cite your sources and produce original content, the smallest of errors such as a bad citation can recognize your text as plagiarism.

Since your career depends on writing genuine content and search engine rankings. you will definitely enjoy the perks of using such tools to facilitate your work.

Anti-plagiarism software are great time savers and can often provide better reviews than human proofreaders as their AI-based technologies don’t miss as many important details as we do.

In this article, we selected what we think is the best plagiarism checker software for PC. Here it is:

What is the best plagiarism checker software?

Grammarly Premium

Grammarly needs no introduction. It’s the most famous grammar checker tool to this date, ideal for work, personal projects, and academic writing.

However, few people know that Grammarly includes powerful plagiarism checker software that verifies over 16 billion web pages. The only issue is that it’s only available for Grammarly Premium users.

Grammarly’s plagiarism checker uses ProQuest databases to detect major similarities between your text and thousands of published works from various academic fields. 

Along with that, it scans the internet for plagiarized content, verifying over 16 billion websites to make sure that the work you want to submit is as original as possible.

Grammarly can be your go-to software solution for writing, regardless of the type of text. Besides the spellchecker and plagiarism checker, it also offers plenty of useful features that help you improve your work. It detects text style and suggests adjustments based on your specific goals.

The software has a large dictionary database that is used to detect spelling mistakes, but also syntax problems. Grammarly can suggest style improvements to avoid repetition, cluttered phrases, and other similar issues.  

When it comes to minor errors such as typos, the tool detects them within seconds and automatically suggests in-text improvements. This way you can focus on the content of your work without stressing too much about easily detectable and fixable problems.

Other key features include:

  • Gives suggestions based on target audience
  • Clarity suggesions
  • Readability and vocabulary feedback
  • Create a custom dictionary associated with your account
  • Native app for PC and MAC

Grammarly Premium provides a comprehensive toolset that writers of all types can make great use of. The software also has a free version that has some limitations. You can install it as a browser plugin, use it directly on the website, or download the app to your computer.

Grammarly Premium

Grammarly Premium

Get a taste of accurate, stylistically appropriated, and plagiarism-free writing with Grammarly!

Plagiarism Checker X

Plagiarism Checker X is one of the best choices when it comes to plagiarism software. It has an intuitive interface, straightforward options, and uses a large database to check for text similarity and original content.

This is another great choice regardless of your field. It provides assistance for students, teachers, writers& journalists, and digital marketers.

Plagiarism Checker X supports multiple document file formats, including MS Word Documents (.docx, .doc), .rtf, .pdf and also plain text. You can easily upload your files and get a plagiarism report right away.

If you suspect that a document has similarities with another specific document, you can use the Side by Side Comparison feature. This analyzes and finds similar and duplicate content within two specific files.

This can save you a lot of time as you won’t have to go through the whole document all over again and only check the report provided by the software.

Another feature that is especially useful for teachers is the Bulk Comparison. You can import multiple documents and run a plagiarism scan across all of them in just a few minutes.

Plagiarism Checker X also has options for digital creators. If you blog, you can use this software to scan across the web for content that is similar to your text. This can save you from getting banned from search engines as you can quickly adjust your text for better originality rates.

Other key features include:

  • Offline side-by-side comparisons
  • Copy/paste option for text insertion
  • Keyword analyzer
  • Percentage reports of similarities

Plagiarism Checker X is has a free fully functional edition with limited features. It also has premium options that come with a lifetime license. 

Plagiarism Checker X

Plagiarism Checker X

Take your writing to the next level and always stay authentic with Plagiarism Checker X!


ProWritingAid is more than a grammar checker – it’s an all-in-one writing mentor designed to enhance your writing through unique suggestions, presented in a fun and interactive manner.

Just as writing is more than just grammar, ProWritingAid stretches its focuses beyond basic punctuation and conjugations, covering your style, tone, approach to help you deliver an original, unique and consistent piece of content.

This tool gives in-depth reports that go beyond grammar, spelling, and syntax. It can analyze your style, check for overused words and phrases, identify alterations, and much more.

When it comes to plagiarism, this tool performs advanced scans across the web. It looks for similarities in over a billion web pages and articles to make sure that your text is original and well cited.

Another smart and useful feature of Pro Writing Aid is the Cliches and Redundancies Report. Often times good information gets lost in way too many phrases. Redundant pieces of text can drive away even readers that are genuinely interested in the topic of your text. This feature ensures the creation of quality, engaging content.

Pro Writing Aid can also detect the writing style of your text and make sure that you follow it across the whole piece. It detects any tense inconsistencies, bad wording, overuse of the passive voice, and more. It helps you create an easier-to-read text, whether you are an academic, blogger, or student.

This software integrates many popular tools such as Google Docs, Microsoft Office, Scrivener, and Essay Checker.

Let’s quickly look at its key features:

  • Automatic suggestions on style improvements to accelerate your editing
  • Eliminate style inconsistencies (vague expressions, passive voice, repetitiveness and more)
  • Check and address spelling and grammar errors instantly
  • Contextual adaptation through the word explorer and thesaurus
  • Intelligent pattern detection to eliminate common mistakes
  • Highest privacy standards and fully GDPR compliant

Pro Writing Aid is a paid service. You can either get a subscription with monthly or annual charges, or a lifetime license with all updates included. It does provide a free trial upon an email request. 



Become a better writer while still staying true to your style with ProWritingAid!


Copyleaks prides itself on being plagiarism checker software powered by AI and machine-learning technology. It can detect paraphrased and similar text.

The tool reaches out to academic and educational environments, as well as to the business and enterprise industry.

Copyleaks can compare two different specific websites. You can get full reports of all individual pages on these two websites and quickly find possible copyright infringement.

On that note, the software also allows you to compare different types of documents. You can upload and compared files of different formats such as .docsx, .pdf, .xls or .ppt. 

Copyleaks can also detect plagiarism in image files with advanced optical character recognition technology. The software can understand the written content in an image and report when it finds risks of plagiarism.

Another really useful feature provided by Copyleaks is the multiple language support. The software can scan for plagiarism across different languages.

Let’s quickly look at its key features:

  • Compare any two files for text similarity
  • Offline mode to find duplicate files
  • Stores your data in the cloud but doesn’t expose it
  • Download reports with plagiarism detection results
  • Integrates with Microsoft Word and Google Docs

Copyleaks is a paid product that offers two different plans: Academia & Education and Business & Enterprise. 

 Get Copyleaks


Turnitin is one software that focuses on integrity which is one of the reasons it’s so amazingly popular in academic environments.

The tool is quick to identify plagiarism by comparing sets of content against the largest collection of digitalized academic materials and highlighting similarities.

The Similarity tool provided by Turnitin checks offers comprehensive plagiarism reports. It compares your text against active and archived web pages, works included in the Turnitin repository, periodicals, journals, and other publications.

The reports generated by this tool give in-depth information about the results of the plagiarism scans. The similarity score is the percentage of the plagiarized content within your paper. 

Turnitin Similarity categorizes plagiarized content in two categories: matches and sources. Matches are texts that are not completely identical, but very very similar. The sources are identical pieces of text that come from other papers.

These can be of great help because you need different solutions to fix your paper. A source can be fixed with the right citation, while a match needs further reading and more original content.

Turnitin Similarity is a great choice for students as it is compatible with multiple learning tools such as Blackboard learn, Brightspace, MS Teams, and Moodle.

Let’s quickly look at its key features:

  • Effective plagiarism detection solution
  • Implement authorship based on data-driven insights
  • Feedback and grading features to facilitate instructional dialog
  • Educational, creative resources to enhance academic skills (blogs, guides, white papers, and more)

Turnitin is a licensed-based software that targets academic institutions. You can’t get it as an individual user if your school doesn’t use it. If you represent an institution and want to use it, you can do that by filling a request form.

Get Turnitin


Scribbr is an education-oriented tool that compares your document to an impressive database. It scans across over 91 billion active and archived web pages and millions of other publications.

Besides that, users can also add their own sources to the checker. If you used small independent publications or unpublished papers as your source materials, you can upload them into the checker and compare them with your paper.

It has up-to-date technology that fights against fake plagiarism alerts. AI-generated scans are never full proof, and there is always a risk of a false positive. The software scan ignores commonly used words and phrases, as well as reference lists.

Moreover, you can tweak the settings to exclude specific papers or databases, change the threshold for small matches, or ignore certain types of similarities.

The report provided by Scribbr offers an overall percentage of similarity along with a list of all the sources found in your text. The plagiarized paragraphs are highlighted and you can click them to see a side-by-side comparison with the source text.

This software is also a great option because it has clear confidentiality policies. Some plagiarism software automatically enrolls any text within their database to improve their scores. Scribbr does not do that and lets you delete your document after you get your report.

Other key features include:

  • Agent support from plagiarism experts
  • Detects plagiarism across 20 different languages
  • Support for institutions and indivdual users

Scribbr is a paid service that charges based on document size. It has 3 different options and also custom plans for institutions. 

Get Scribbr


Plagramme is a similarity checker with an ever-growing customer base. It is greatly appreciated for features such as paraphrase detection, quote correction, and the extensive source database.

This tool is mainly targeted towards students and teachers, but it can be used with no issues by other professional writers because it is equipped with the tools to check for similarities across all fields and types of sources, including web-based content.

Plagramme offers to users detailed reviews of their texts. Its up-to-date detection technology gives you separate scores for similarity, plagiarism risk, paraphrase score, improper citations, and matches. The similarity score is the overall percentage, while the others are more specific.

Users can easily identify each of these issues within their text because the tool highlights them in different colors. You can also get links and side-by-side comparisons with the sources found during the detection process.

Palagramme has a very large multi-language database that covers over 129 languages. It can easily detect translated text, paraphrases of the translated text, and other similar issues. It is reportedly recognized as the national anti-plagiarism tool in multiple countries.

Improper citations can also create problems with your paper. Palagramme takes care of these as well. It detects all citations and uses highlights for feedback. Green highlights mean that your citations are correct, and purple means that you need to adjust them. 

Other key features include:

  • Sharing options between students and teachers
  • Free plan  for teachers
  • Multiple language interface

Plagramme is a paid service. It charges based on the size of your text. You get to try it for free for a limited-sized text.

Get Plagramme

Dupli Checker

Dupli Checker is a web-based anti-plagiarism software. It is very easy to use and intuitive and offers multiple options for inserting your text.

You can either paste your text from your original document and insert it in the textbox on the main page, upload the textfile (supports .tex, .txt, .doc, .docx, .odt, .pdf, .rtf), or insert a webpage url.

Dupli Checker works in a similar manner as the other software in this list. It digs across its database for similarities between your text and previously published content. It can be used for all types of text, including academic papers, blog posts, or essays. It provides percentage-based results.

This software also vows to protect your privacy. It does not save the documents you upload and makes sure to delete any trace of them once you are done with checking the results.

This tool also has a grammar checker feature that highlights any misspellings or grammar errors.

It can detect text similarities across 7 different languages. It can detect translations and risky paraphrases on the web and across multiple types of publications.

Dupli Checker has an automated feature that can help you improve your text. The Make it Unique feature can rewrite your text in a plagiarism-free manner. This can be a really good time-saving option.

Other key features include:

  • Super fast detection
  • Highlights plagiarized paragraphs with color coding 
  • Identifies duplicate sentences and phrases

Dupli Checker is a free tool. It can be used right away, without any registration. You only need a good Internet connection. 

Get Dupli Checker

In the tech age that we live in, a plagiarism checker software tool is really necessary for copyright protection. In many cases, plagiarism can result in lawsuits, criminal charges, and sometimes even imprisonment.

Even if you commit unintentional plagiarism, it will still be viewed as plagiarism in the eyes of the law, and this is very important to remember.

Use one of these trusted tools, according to your needs, and eliminate the risk of being penalized for plagiarism.

By using plagiarism software, you will be able to make sure that your content is 100 percent original.

We hope that our recommendations were helpful for you. For more suggestions, please access the comments section below.

Frequently Asked Questions

  • Plagiarism software scans millions of Internet resources and compares your text document to them. It detects the level of similarity and creates a detailed report.

  • Yes, if you write and publish numerous articles. Every person has its own writing style so it’s pretty easy to plagiarize yourself by writing the same ideas and expressions.

  • Extract the main ideas and try to rephrase your sentences. You can also use one of the plagiarism checkers we mentioned above to double-check.

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