Plagiarism Checker X vs Unicheck Comparison: Reviews, Features, Pricing & Alternatives in 2026

Detailed side-by-side comparison to help you choose the right solution for your team

Updated Apr 2026 8 min read

Plagiarism Checker X

0.0 (0 reviews)

Plagiarism Checker X is a specialized desktop application that helps you identify duplicate content across documents, web pages, and research papers to ensure original writing.

Starting at Free
Free Trial NO FREE TRIAL
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Unicheck

0.0 (0 reviews)

Unicheck is a cloud-based plagiarism prevention software that helps you verify document authenticity and identify similarities across web sources and internal databases to ensure academic and professional integrity.

Starting at $5/mo
Free Trial 0 days

Quick Comparison

Feature Plagiarism Checker X Unicheck
Website plagiarismcheckerx.com unicheck.com
Pricing Model Freemium Subscription
Starting Price Free $5/month
FREE Trial ✘ No free trial ✓ 0 days free trial
Free Plan ✓ Has free plan ✘ No free plan
Product Demo ✘ No product demo ✓ Request demo here
Deployment desktop saas mobile
Integrations Microsoft Word Adobe PDF Canvas Moodle Google Classroom Blackboard Schoology Google Docs Microsoft Word Microsoft Teams
Target Users freelancer small-business solopreneur small-business mid-market enterprise
Target Industries education marketing publishing education publishing legal
Customer Count 0 0
Founded Year 2012 2014
Headquarters London, UK Kyiv, Ukraine

Overview

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Plagiarism Checker X

Plagiarism Checker X helps you verify the originality of your writing by scanning billions of web pages and local documents. Unlike many online tools, this is a desktop-based application, meaning your sensitive data stays on your machine rather than being uploaded to an external server. You can compare two documents side-by-side or check a single piece of text against the entire internet to find matching sources instantly.

The software is built for students, teachers, and digital marketers who need to process large volumes of text quickly. You can upload multiple files at once using the bulk search feature, making it easy to grade entire classrooms of assignments or audit large websites. It provides detailed HTML reports that highlight exact matches, so you know precisely which parts of your content need revision to remain unique.

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Unicheck

Unicheck helps you maintain high standards of original writing by identifying similarities across billions of web pages and educational databases. Whether you are an educator grading student papers or a business professional verifying content, you can upload documents and receive detailed reports in seconds. The platform highlights exact matches and citations, allowing you to distinguish between intentional plagiarism and correctly formatted references.

You can integrate the tool directly into your existing Learning Management System (LMS) like Canvas, Moodle, or Google Classroom to automate the checking process. It supports various file formats and provides a side-by-side comparison view so you can easily verify sources. By focusing on accuracy and speed, it reduces the manual effort required to ensure every piece of work is authentic and properly credited.

Overview

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Plagiarism Checker X Features

  • Online Plagiarism Detection Scan your text against billions of websites to find matching content and verify the original source of any passage.
  • Side-by-Side Comparison Compare two documents next to each other to identify similarities and see exactly how much content they share.
  • Bulk Search Tool Check multiple documents or entire folders at once to save time when grading assignments or auditing large content libraries.
  • Color-Coded Reports View detailed HTML reports where highlighted text shows you the exact level of similarity for every sentence.
  • Multi-Language Support Detect duplicate content in over 50 languages, including English, Spanish, French, German, and Italian, for global reach.
  • URL & Website Scanning Enter a website URL to analyze the live content and ensure your web pages haven't been scraped or copied.
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Unicheck Features

  • Real-time Web Search. Scan your documents against billions of live web pages to find the most up-to-date matches and sources.
  • LMS Integration. Connect your plagiarism checker directly to Canvas, Moodle, or Blackboard to automate grading and similarity checks.
  • Side-by-Side Comparison. View original text and matching sources simultaneously so you can quickly verify the context of similarities.
  • Citation Detection. Identify APA, MLA, and Chicago citations automatically to exclude properly quoted material from your similarity score.
  • Bulk Uploading. Upload and check multiple documents at once to save time when managing large classes or projects.
  • Interactive Reports. Navigate through color-coded reports that show you exactly where matches occur and which sources they come from.

Pricing Comparison

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Plagiarism Checker X Pricing

Basic
$0
  • Search up to 150 words
  • Daily search limit
  • Online plagiarism detection
  • Basic HTML reports
  • Supports 50+ languages
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Unicheck Pricing

Personal (20 Pages)
$5
  • Check up to 20 pages
  • Real-time web search
  • Detailed similarity reports
  • 99.9% uptime guarantee
  • Support for all file formats

Pros & Cons

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Plagiarism Checker X

Pros

  • One-time payment model avoids expensive monthly subscriptions
  • Desktop-based processing keeps your documents private and secure
  • Fast scanning speeds for large batches of files
  • Detailed color-coded reports make editing very simple
  • Supports a wide variety of file formats like PDF and DOCX

Cons

  • Only available as a Windows desktop application
  • Requires an active internet connection for web scans
  • Interface feels slightly dated compared to modern web apps
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Unicheck

Pros

  • Fast scanning speeds even for long documents
  • Highly accurate citation and reference exclusion
  • Clean interface that is easy to navigate
  • Seamless integration with popular learning platforms

Cons

  • No forever-free version for casual users
  • Occasional false positives with technical terminology
  • Page-based pricing can become expensive quickly
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