15 Best Copyscape Alternatives 2025

As a blogger, content writer, teacher, or student, you probably know that plagiarism is unacceptable. Google frowns upon it too and can easily blacklist your site if they find duplicate text. That means loss of rankings, traffic, and sales. Who wants that?

Luckily, Copyscape comes in to help you check your content against billions of similar pages on the internet. If there are any matching sources, the app will show you not only the matching text, but also the source it matches with online.

The plagiarism tool offers a free service that allows you to paste a URL and check for any duplicate content online. There’s a Copyscape Premium that lets you paste text or upload a batch of files and check for plagiarism. Furthermore, you can create a private index to let you check new content against what’s in the private database.

The other product is Copysentry that protects your website against content theft. The tool works by monitoring the internet for your content’s copies and emails you whenever new copies show up.

I like Copyscape because it’s fast, easy to use, clean (no ads), supports most of the popular languages and alphabets, and checks content against almost the entire internet.

However, there’s no way to verify whether the app has thoroughly checked all the revealed sources. Moreover, it can’t save plagiarism reports, doesn’t support cloud platforms like Google Drive, and their customer support is slow.

These shortcomings may prompt you to look for Copyscape alternatives. Keep reading to discover the best tool for your needs.

Best Copyscape Alternatives

1. ProWritingAid

You might know ProWritingAid as one of the best grammar and proofreading checkers.

But it also features a plagiarism checker that checks your content against more than a billion web pages to ascertain its originality.

While it doesn’t come with a free version it’s an affordable Copyscape alternative.

Here’s why: you’re billed based on the number of checks rather than the number of words. That means you can check high volume texts like novels and eBooks without paying much.

You pay $10 for 10 checks, $40 for 100 checks, $120 for 500 checks, and $200 for 1000 checks.

As a premium user, you can generate plagiarism reports and access other tools, such as grammar checker, thesaurus, readability reports, and more.

Moreover, the app is easy to use and compatible with tools like MS Word and Google Docs.

2. Grammarly

Grammarly’s Plagiarism Checker compares your content against more than 16 billion web pages plus academic papers within Proquest’s databases. When a section of your text matches the content on web pages or in a database, you’ll receive a plagiarism alert.

The free version displays the number of grammar issues in the content and whether it’s plagiarized or not. But it doesn’t show you where the issues are.

The plagiarism checker in Grammarly Premium highlights the plagiarized sentences and displays the percentage of plagiarism in each.

Besides, you can see the sources of matching content on the right panel in the form of web URLs. You can click those links to dig deeper and confirm the details. As you rewrite the plagiarized content in the Grammarly interface, the highlighted sections will disappear.

In addition to checking for plagiarism, Grammarly is a grammar and spelling, and punctuation checker. So, while rewriting any unoriginal content, the tool also shows grammar errors in your content with suggestions on what to do. This is one of the features you won’t find on Copyscape

You can use the free version to check for plagiarism, but it only says whether the text has plagiarism or not. It also displays the number of writing issues in it.

To see the specific unoriginal text and other grammar errors, you may need to upgrade to the Premium Plan that starts at $12 a month or Business Plan that starts at $12.50 a month.

Explore the best alternatives to Grammarly.

3. Copyleaks

Teachers, SEO writers, businesses, bloggers, students, and anyone else use Copyleaks to check for duplicate content and plagiarism.

Copyleaks uses AI and machine learning technology to analyze manipulated text and spot identical, similar, and paraphrased sections of the content. This tool finds what other plagiarism checking tools let slip through the cracks.

What I find impressive about Copyleaks is the ability to generate accurate and comprehensive results as PDF reports. This is a feature you’d be hard pressed to find on Copyscape.

The CheatSpot.AI feature allows teachers to receive alerts when there’s suspected cheating. This feature uses White Ink and Character Development methods that lack in most plagiarism checkers.

Bloggers can use Copyleaks to compare individual webpages on two different websites to detect possible copyright infringement.

But that’s not all. Online course instructors can integrate Copyleaks with their favorite learning management system (LMS) in less than 30 minutes to help check for plagiarism and duplicate text right within the LMS.

It gets better: The software supports various file formats like PDF, Docx, Doc, PPT, XLS, and image files using the advanced OCR technology.

Copyleaks offers a free limited trial that lets you check 20 pages per month. The premium version targets two types of users.

The Academia and Education version costs 10.99/month to check 100 pages or 25,000 words. On the other hand, the Business and Enterprise version goes for $9.99/month for checking 100 pages or 25,000 words.

4. PLAGTRACKER

PLAGTRACKER provides an online plagiarism checker tool that would thoroughly scan your document and give a report by highlighting a number of the plagiarized text.

Once you upload the content on the website or paste it in the text box, the tool compares it against all academic articles on the internet together with their database, which contains over 20 million documents.

This tool is best for students and teachers who handle academic content online. Plagiarism can get a student penalized for copying another person’s work. That’s why by using this tool, all your essays will be checked thoroughly, making sure your work is entirely original.

PLAGTRACKER is absolutely free software. Other than checking for plagiarism, you get other features to proofread your text and fix grammar errors. When dealing with large documents, you will have to upgrade to a premium account since it provides you with the capacity to scan larger files more quickly.

PLAGTRACKER’s premium account isn’t pricey and has more features than Copyscape. Some of the app’s excellent features include an instant report (online version), PDF report (offline version), grammar check, compatibility with multiple file formats, references processing, unlimited checking volume, and more.

The billing is on a subscription model at $14.99 per month but there’s a 50% discount for the first month, which means you pay $7.49.

5. SmallSEOTools

The Plagiarism Checker by SmallSEOTools works by matching your content against billions of other pages on the web. It processes the results within seconds and generates a report.

What gives the software an edge over Copyscape is the builtin rewriting feature. If your content contains unoriginal text, you simply need to click on the rewrite button and it will automatically rewrite the text, making it unique.

Plagiarism Checker also supports several document formats, including .docx, .pdf, .doc, .txt, .odt, .rtf, and more. Provided your document is in digital format, you can upload it and let the software do the rest.

Want to check an entire web page? Well, this free tool gives you a feature that would allow you to paste a URL and check whether any of its content is copied elsewhere.

Did you run a plagiarism check and want a report to send to relevant parties as proof that they stole your content? No worries, as the tool generates a report that you can download and share with others. The sharing option is right there in the app.

Moreover, this excellent tool allows you to check for plagiarism in languages other than English. Hence whether your content has been written in Chinese, Italian, French, the tool processes it trouble-free.

Interestingly, they have a WordPress plugin that lets you check for plagiarism within a post or page in WordPress without copy pasting your entire post.

Plagiarism Checker from SmallSEOTools has a Free Plan and four premium plans, paid monthly. The Free Plan lets you run unlimited words up to 20 queries.

The Basic Plan costs $4.99 per month for upto 500 queries. You can run 1000 queries for $9.99 in the Standard Plan, 3000 queries for $19.99 per month in the Business Plan, and 10000 queries for $49.99 per month in the Professional Plan.

If you prefer an annual plan, you can buy it at $99.99, $199.99, and $399.99 for the Basic, Standard, and Business Plans respectively.

6. Duplichecker

This site provides you with a complimentary deep search space to scan your document to make it wholly unique. The tool is entirely free, and you can access its features anytime, anyplace.

You can also upload a file in .Docx, .Doc, .Tex, .Txt, .PDF, .Odt, or .Rtf formats.

Duplichecker is among the best online free plagiarism checkers that provide the best matching detection and highly accurate plagiarism checker ratio.

After detecting duplicate content in your text, you can remove plagiarism from the text by clicking ‘make it unique’. This feature saves you valuable time in rewriting plagiarized content and is not available on Copyscape.

Not only does the software remove plagiarism instantly, but it also comes with writing enhancements, such as grammar error highlights.

Duplichecker offers multilingual support for Spanish, Portuguese, Italian, Russian, Indonesian, Dutch, and Arabic.

The free version lets you paste up to 1000 words in the text box and check for plagiarism against other websites online. Duplichecker later displays the results in percentage, which will help you gauge the plagiarized content. You can also paste the URL of a web page (not more than 1000 words) and check for duplicate content.

The Pro version starts at $10 per month for the Basic II version. The other versions increase at $5 more per month. Going Pro grants you access to support, deep search, accurate reports, ad free interface, and lets you check up to 10,000 words.

7. CopyGator

CopyGator is an online tool that will help you detect any content that has been copied from your posts. The application achieves this by monitoring your RSS feed and comparing them to data generated from other feeds.

The software will automatically update you if any of your feeds match other blogger feeds by sending a “collusion.” Depending on the level of similarity, this particular feature will describe to you how much of your content has been copied, such that some are labeled “near” and others “exact.”

In addition, the online tool will provide you with more information concerning when, where, and how your content has been plagiarized. Guess what? All these services are provided to you for free. CopyGator works like Copyscape’s Copysentry, but it’s absolutely free.

8. Plagiarisma

Plagiarisma is a perfect plagiarism checking tool for students and teachers. It scans essays, research papers, dissertations, and coursework and compares them to its massive database of internet sources, past essays, past examination papers, published journals, old dissertations.

The tool also compares your text against the current and past published content on Google Scholar and Google Books. The software is fast and supports multiple file formats, such as Docx, Doc, Txt, PDF, Rtf, and Htm. The duplicate checker supports over 190 languages and can check both text and URLs.

Plagiarisma isn’t limited to plagiarism detection; it also checks text for grammar errors and has a synonymizer for rewriting content by using synonyms. Besides, it has a similarity checker that compares two pieces of text using Levenshtein method and Fuzzy logic. Copyscape doesn’t have these extra features, which is why Plagiarisma is its great alternative.

This tool is free but has four premium options, including $8 per day, $15 per month, $25 for three months, and $45 for six months.

9. Plagium

Plagium is owned by Septet Systems Inc., an organization whose specialty is to provide advanced search solutions to the government, industry and public.

One of its unique features includes the ability to upload any file, whether a PDF, word document, or text file. After uploading, Plagium scans the file and creates a report of any text duplicate.

The software offers a free quick search option that allows users to scan their documents quickly. But if you conduct many searches, you may be required to sign up and search from $0.04 per page.

It also provides a deep search at $ 0.08 per page, which compares your text to more sources on the internet.

The third option is File Search that lets you compare various text documents and generate a visually friendly report that you can easily understand and work on. The cost is $0.005 per page.

More importantly, Plagium integrates with Google Drive, allowing you to work between Google drive and the tool hassle-free. There’s also a Google Docs Plagium addon.

The last three features aren’t available on Copyscape, making Plagium an ideal alternative.

Also Read: Spin ReWriter vs WordAi

10. Plagscan

Plagscan is probably one of the most advanced plagiarism checkers out there. Why do I say this? Its reports are comprehensive and organized.

The tool provides a source list where matches are categorized according to their sources. For instance, you’ll know if the match is from previously submitted documents, from the web, the Plagiarism Prevention Pool, or your company’s repository.

It’s also easy to read and understand the plagiarism report, as matches are highlighted in different colors. Green indicates detected citations, blue shows potentially modified content, and red shows the exact matches with their sources.

Highlighting reports in different colors isn’t available on Copyscape, making Plagscan a better alternative that gives you more organized and easy to understand reports..

Plagscan features a side by side comparison tool that lets you compare your document and the discovered matches. Simply put, you can see a match and its corresponding source in one clear view rather than switch between different windows.

Using this tool is easy: upload a document from cloud storage, your computer, or drag and drop. The tool keeps the document’s original format. After getting a report, you may download it in various formats and keep a copy. And they don’t share your document with third parties.

Plagscan is created for schools, higher education facilities and businesses. Single users and students can access the first 2,000 words free.

Their Private Plans start from $5.99 per 6,000 words while the Business Plans start from $17.99 per month. There’s a free trial too.

11. EasyBib

EasyBib has the plagiarism checker and grammar checker working together to indicate duplicate text and grammar errors respectively.

Using the tool is easy: click on ‘check your paper’, paste the text in the text box or import a file from the computer or Google Drive. The software will conduct plagiarism and grammar checks simultaneously and display the results.

The displayed results are in three categories: grammar, plagiarism, and expert check. You can click on each option to see the errors and edit.

I uploaded a random file from my Google Drive and ran a check. The results appeared after a few seconds. I could only see part of the grammar errors and was prompted to sign up for a free trial to see all grammar errors as well as plagiarism errors

There’s an option to choose the English language for checking your document. You can choose U.S. English, UK English, CA English, and AU English.

While Copyscape only checks for plagiarism, EasyBib checks for both plagiarism and grammar mistakes, making it an impressive alternative.

EasyBib has a free account and two paid accounts at $9.95 per month and $19.95 per month.

12. Plagly

Plagly offers a fast, free online plagiarism detection tool that aims to help teachers, students, and SEO professionals maintain the originality of their content by detecting plagiarism and duplicate texts.

Plagly compares content alongside millions of other articles online and other databases and highlights for you any text that might have been plagiarized or seems like it.

When it comes to academics, Plagly allows students to scan their essays and materials through its plagiarism checker, comparing their work against several academic papers, research materials, and essays to ensure there is no plagiarized text.

The app also offers a grammar checking tool that can help improve your writing skills by highlighting grammatical mistakes.

You can prevent duplicate content on your site by using the app’s SEO plagiarism checker to scan website content and compare it across the entire internet to improve your website SEO, readership, and visibility.

Don’t forget that all these services are offered to you for no cost at all. It can be a great alternative since it contains almost all of Copyscape’s features for free.

13. Quetext

Detection of plagiarism has never been easier, thanks to Quetext. The tool uses deep search technology to contextually analyze your work against billions of web pages, news sources, academic sources, and online textbooks.

The plagiarism report appears in the form of a ColorGrade feedback, highlighting the exact-match sources and the near-exact or fuzzy matches in various colors.

You can fix the plagiarism errors by rewriting or deleting the duplicate text. The alternative is to use the Cite Source option to create and insert citations in APA, MLA, anc Chicago formats in your document. The different options that the software provides to help fix plagiarism is what makes it a great Copyscape alternative.

The free plan is an excellent starter since it comes with a plagiarism checker tool of a limit of 2500 words, ColorGrade feedback, contextual analysis, conditional scoring, and fuzzy matching.

On the other hand, for just $9.99 a month, you get up to 100,000 words limit, deep search extension, custom URL extension, a citation assistant, and so much more.

14. Viper

Viper is one effective plagiarism checker tool that uses credits to provide a content evaluation to its users; with an easy-to-use interface, viper checks for plagiarism against over 10 billion sources, journals, online books, papers, and PDFs across the web.

The tool comes with a lightning speed feature; you will review your accurate scan report within less than 30 seconds of the scan.

Viper also supports 56 world popular languages. In other words, you can scan for plagiarism in different languages, including English, Chinese, Spanish, Arabic, German, and many others and be able to detect plagiarism.

After a successful scan, the tool will provide you with an easy-to-understand downloadable report, which will give you the level of plagiarism in a percentage. This feature is lacking on Copyscape, so Viper is a better alternative here.

Viper uses a “credit” type subscription, where you have to buy credits to check a document for plagiarism. The number of credits depends on the number of words and one credit starts from $3.95 and lets you scan up to 5,000 words.

To scan a document with more words, you’ll need three credits and so on. It’s a pay as you go plagiarism checker, so no need to worry about the expiry of a subscription.

Interesting Read: QuillBot vs Spinbot

15. Unicheck

Are you looking for more than just pointing out similarities? Unicheck is an online tool that will help you achieve authenticity. Trusted by over 1100 learning institutions globally, Unicheck provides a complete solution for academic institutions to detect duplicates, text modifiers and prevent content cheating.

The tool can unveil the manipulation of texts, and if detected, it will provide you with the details of the modification listed on the report. However, it only focuses on the crucial matches, and it will ignore common phrases. That means you get a report on the relevant information only.

Unicheck allows you to access its simple and easily understandable reports anytime, which are also available for download. This tool is a great Copyscape alternative, especially when dealing with academic content since an instructor can analyze a student’s progress by viewing the statistics accumulated over a period of time.

Conclusion

In my opinion, ProWritingAid’s Plagiarism Checker is the best Copyscape alternative because it scans your text against over a billion pages online, making it difficult for any duplicate content to be left out.

It also comes with a plethora of other features like thesaurus, grammar, style, diction, cliche, structure, transition, overused words, and more. So, it takes care of all your content needs.

Its pricing model is also reasonable; you pay according to the number of checks rather than words, making it an affordable option.

It’s also user-friendly and integrates with Google Docs and MS Word.