Plagiarism | Plagiarism Checkers | Paraphrasing Techniques | Scholarly Paraphraser
If you’re writing a research paper, thesis, or academic essay, you’ve probably heard of Turnitin. Most universities rely on it to check submissions for plagiarism and, more recently, AI-generated content.
But here’s the challenge—not everyone has access to Turnitin. That’s why many students, researchers, and writers search for a Turnitin alternative or a plagiarism checker similar to Turnitin before submitting their work.
A good plagiarism checker works by comparing your text against a large database of web pages, academic publications, and student papers. If it finds overlapping content, it highlights the matched sections and shows the original sources. This helps you fix issues early—either by rewriting the text or adding proper citations—so you can avoid problems during final submission.
However, not all plagiarism tools are created equal. Many free tools only scan web content, while high-quality tools (like Turnitin) check against academic databases and previously submitted papers. Some tools detect only exact matches, while others identify paraphrased or slightly modified content—something that’s critical in academic writing.
So, how do you choose the right tool?
In this guide, we’ll walk you through the best Turnitin alternatives, including plagiarism checkers and AI detectors that offer similar features. We’ll compare them based on accuracy, database strength, ease of use, and suitability for academic work—so you can find the tool that best fits your needs before submission.
1. FinalScanPro
FinalScanPro is our #1 recommendation for plagiarism checking in 2026. Since Turnitin is not available to individual users, many people need a Turnitin alternative to check their work before submission. FinalScanPro is one of the best Turnitin alternative tools and works as a plagiarism checker similar to Turnitin, producing reports close to university plagiarism software. It also includes AI detection and a detailed revision report that shows exactly how to fix similarity and AI issues, making it useful for essays, theses, dissertations, and research papers.
Because documents are not stored after scanning, FinalScanPro is suitable for confidential academic and professional work. Files are not added to a shared database, so you can check plagiarism multiple times while revising your document without changing the final similarity score. This makes it useful when using a Turnitin alternative before submission
2. Turnitin
Turnitin is one of the most popular plagiarism checkers used by Universities and Colleges. Your institution will typically subscribe to Turnitin and you will be able to create an account on the system for free. You have to run your assignments and essays through Turnitin before submission. Typically, your institution will tell you what is the acceptable plagiarism score and you have to rewrite and reword your work until you achieve this score. Turnitin has licensing agreements with large academic databases and hence it checks your work against thousands of scientific publications and academic books. Unfortunately, Turnitin access is usually limited to universities, so it’s hard to get it for a single paper.
3. Ref-n-Write
Ref-n-write software is a popular academic writing tool used by academics, researchers, and Universities worldwide. Ref-n-Write’s plagiarism feature allows you to check your document against local files and also generate full plagiarism reports. Ref-n-write is a Microsoft Word Addin, so you can perform the checks while writing within MS Word. Students love this feature because, unlike other plagiarism checkers, Ref-n-write doesn’t upload content to the internet, all the checks are performed locally on the user’s computer.
4. Scribbr
Scribbr is an online plagiarism checker available to individual users and is commonly used for academic writing. Like most plagiarism checkers, it generates similarity reports by comparing text against online sources and databases. The results can vary depending on the document and the scan settings used.
5. iThenticate
IThenticate is a product offered by Turnitin group predominantly to check future scientific papers for plagiarism. Many publishers use iThenticate to check journal papers submitted by authors for plagiarism before publishing. The tool performs plagiarism checks against numerous scientific proprietary databases. Some researchers use iThenticate to check their current publications under preparation against their previously published journal papers from different publishers.
6. Grammarly
Grammarly plagiarism detection tool is currently being offered as an Addon to Grammarly tool. The academic database against which Grammarly performs plagiarism check is somewhat limited when compared to Turnitin, however Grammarly does perform checks against some research databases. One of the important sources it checks against is the ProQuest database, which contains a large collection of the papers and reports in the field of business and economics.
7. Copyleaks
Copyleaks is a fast-growing platform offering advanced plagiarism and AI detection tools, making it a strong Turnitin alternative and a reliable plagiarism checker similar to Turnitin. It provides solutions tailored for both academic institutions and businesses. Users can subscribe to run detailed similarity checks and AI detection, including a useful document comparison feature that helps identify self-plagiarism by comparing two files—ideal for avoiding issues with previously published work. Tools like FinalScanPro and Ref-n-Write are powered by Copyleaks, allowing you to run accurate plagiarism checks and AI detection without signing up separately for Copyleaks, making them a convenient AI checker similar to Turnitin for students, researchers, and professionals.
8. Unicheck
Unicheck is another plagiarism checking tool that is used by many Universities worldwide. In addition to checking your text against numerous webpages and documents online, it also allows checking against personal documents stored in Google Drive and DropBox. Although Unicheck doesn’t check your text against many proprietary academic databases, it does check against many open source databases.
9. Free Plagiarism Checkers available online
There are plenty of online plagiarism detectors that check your documents against a variety of sources available online and numerous websites. Some of the popular tools are listed below. Most of these tools offer free check on first few documents. We put these tools to the test by copying a passage from a published research paper and passing them through the tools. Most of the tools detected plagiarism and managed to find the source of the text on ResearchGate website and SPIE journal abstracts page. The process was fairly quick and although there were slight differences in the presentation format, the overall plagiarism detection abilities were comparable.
10. Easybib & QueText
Easybib and QueText are paid plagiarism checkers which checks text against webpages and open source databases. It performs reasonably well although no checks are performed against proprietary academic databases. You can check plagiarism for free in QueText limited number of times. However, Easybib only allows you free checks if you provide credit card details and hence difficult to evaluate.
11. Other Paid and Free Plagiarism Checkers
Other plagiarism checkers that we haven’t extensively tested are listed below. Readers are advised to try these tools out and make the judgment for themselves.
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