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Plagiarism Checker X

Windows-based plagiarism and AI content detection software for academic and professional use

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  • Overview
  • Features
  • Pricing
  • Pros
  • Cons
  • Reviews

Plagiarism Checker X Overview

  • Updated February 9, 2026

Plagiarism Checker X is a Windows-based plagiarism detection tool designed for students, teachers, writers, and SEO professionals. It scans documents against billions of web pages to detect text similarity and AI-generated content.

The software supports multiple file formats, bulk comparison, readability analysis, and side-by-side reports, while keeping user data stored locally for enhanced privacy.

Key Features

  • Online Plagiarism Detection: Scans content across billions of web pages using deep search technology.
  • AI Content Detector: Identifies whether text is AI-generated or human-written.
  • Side-by-Side Comparison: Compares multiple documents to detect cross-plagiarism.
  • Bulk File Checking: Allows educators to scan entire batches of assignments in one click.
  • Readability Checker: Analyzes reading difficulty using multiple academic indexes.
  • Comprehensive Reports: Generates detailed Word/PDF reports with color highlights and QR verification.

Price

Plan Price Featured
Basic Free $0 (Free Forever) Limited words per check, Daily search limit, 20+ language support
Professional $39.95 (One-Time Payment) Unlimited words, Online similarity check, Lifetime license with 1-year maintenance
Business $147.95 (One-Time Payment) 5 user licenses, Branding reports, Priority support

Price details: https://plagiarismcheckerx.com/buy

Pros

Competitor

Pros
Turnitin Plagiarism Checker X is significantly more affordable than Turnitin, offering a one-time payment instead of recurring institutional fees. It is easier for individual users to access without academic affiliation, while still providing clear similarity reports and offline document handling for privacy-conscious users.
Grammarly Unlike Grammarly’s subscription-based model, Plagiarism Checker X provides lifetime licenses, reducing long-term cost. It also offers bulk and side-by-side comparisons that Grammarly lacks, making it more suitable for educators managing multiple student submissions.
Copyscape Plagiarism Checker X supports full document uploads and multiple file formats, whereas Copyscape mainly focuses on web pages. The desktop-based approach also keeps files local, appealing to users who prioritize data privacy.
Quetext Compared to Quetext’s credit-based pricing, Plagiarism Checker X offers predictable one-time pricing. Its bulk comparison and cross-document checks are particularly beneficial for teachers and institutions handling large volumes of content.
Duplichecker Plagiarism Checker X provides more detailed, downloadable reports and advanced comparison features than Duplichecker. Its AI detection and readability analysis add extra layers of evaluation beyond basic similarity checks.

Cons

Competitor

Cons
Turnitin Compared to Turnitin’s proprietary academic databases, Plagiarism Checker X may miss some subscription-only journals. This can be a limitation for high-stakes academic publishing where institutional databases are essential.
Grammarly Plagiarism Checker X lacks Grammarly’s advanced grammar correction and writing assistance. Users seeking an all-in-one writing enhancement tool may need to pair it with separate editing software.
Copyscape Copyscape’s web-focused scanning is often faster for checking published URLs, while Plagiarism Checker X requires document-based checks, which can feel less streamlined for quick website audits.
Quetext Quetext offers a cleaner, more modern cloud interface, whereas Plagiarism Checker X’s desktop UI can feel dated. New users may need time to adjust to its Windows-only environment.
Duplichecker Duplichecker’s browser-based tool is more accessible across devices. Plagiarism Checker X is limited to Windows, restricting use for macOS or Linux users.

Verified Customer Reviews

  • G2 Review (Rating: 4.7/5): Users appreciate the accuracy and detailed reports but mention that the interface feels outdated compared to modern cloud tools.
  • Capterra Review (Rating: 4.6/5): Reviewers value the reliability and one-time pricing, while noting that the Windows-only limitation can be restrictive.
  • Trustpilot Review (Rating: 2.5/5): Some users like the core detection features, but others report mixed experiences with support responsiveness.
  • AIDetectPlus Review (Rating: 4/5): The side-by-side comparison and visuals are praised, though the lack of macOS support is considered a drawback.
  • Reddit/r/Blogging Review (Rating: 4/5): Bloggers like the budget-friendly lifetime license, but caution that results may differ from tools using proprietary academic databases.