Best Plagiarism Checker X Alternatives in 2025
Looking for alternatives to Plagiarism Checker X? In this comparison, we take a closer look at Plagiarism Checker X alongside similar software solutions including Plagiarism Checker X, Grammarly, Duplicate Cleaner Free, UltraCompare Professional, NAPS2, Text Analyzer, Mendeley Desktop, Atlantis Word Processor and PDFgear.
Our detailed comparison table highlights key features, pricing, and performance of these leading solutions, empowering you to make an informed decision. Whether you're seeking robust functionality, user-friendly design, or cost-effective alternatives, explore how Plagiarism Checker X, Grammarly, Duplicate Cleaner Free, UltraCompare Professional, NAPS2, Text Analyzer, Mendeley Desktop, Atlantis Word Processor and PDFgear stack up to find the perfect software for your goals.
Supported File Formats
 Plagiarism Checker X
|
.doc, .docx, .PDF, .rtf, .txt |
 Grammarly
|
Supports text-based documents, Microsoft Word, Google Docs, and various writing platforms. |
 Duplicate Cleaner Free
|
Various file types including images, music, videos, documents. |
 UltraCompare Professional
|
Over 50 file formats including binary files, text files. |
 NAPS2
|
Supports multiple file formats for scanned documents and images. |
 Text Analyzer
|
.docx, .odt, .pdf, .rtf, .txt, HTML |
 Mendeley Desktop
|
PDF files and document files integrated with word processors. |
 Atlantis Word Processor
|
.doc, DOCX, PDF, HTML, images (jpg, png, bmp) |
 PDFgear
|
PDF, DOC/DOCX, Excel XLS/XLSX, PowerPoint PPT/PPTX, JPEG/PNG images |
Cross-Platform Compatibility
|
Plagiarism Checker X
|
Windows, Mac (limited), Linux (limited). |
|
Grammarly
|
Desktop app and browser extensions available on multiple platforms including Windows and Mac; mobile devices supported. |
|
Duplicate Cleaner Free
|
Windows only. |
|
UltraCompare Professional
|
Windows, Mac OS, Linux. |
|
NAPS2
|
Windows (supports Windows Vista and above). |
|
Text Analyzer
|
Windows. |
|
Mendeley Desktop
|
Windows, Mac OS, Linux; mobile apps available. |
|
Atlantis Word Processor
|
Windows only. |
|
PDFgear
|
All operating systems via web browser; Android and iOS apps available. |
Primary Functionality
|
Plagiarism Checker X
|
Plagiarism detection in documents with detailed reports and high accuracy. |
|
Grammarly
|
AI-powered writing assistant offering grammar checking, proofreading, plagiarism detection, and style suggestions. |
|
Duplicate Cleaner Free
|
Scanning and deleting duplicate files including various file types for cleaning disk space. |
|
UltraCompare Professional
|
File and folder comparison tool supporting directory synchronization and version control integration. |
|
NAPS2
|
Free open-source scanning software with OCR capabilities for creating searchable PDFs. |
|
Text Analyzer
|
Software for detailed text analysis including character count, word frequency and visualizations. |
|
Mendeley Desktop
|
Reference management software with citation formatting, annotations and paper organization for academic use. |
|
Atlantis Word Processor
|
Word processing software with advanced editing features including spelling and grammar check. |
|
PDFgear
|
Web-based PDF editing tool supporting annotation, compression, conversion and encryption features. |
Availability of Free Version or Trial
|
Plagiarism Checker X
|
Offers a free trial period before license purchase. |
|
Grammarly
|
Provides a free version with limited checks; premium version offers more features. |
|
Duplicate Cleaner Free
|
Free version available with some limitations; paid Pro version unlocks more features. |
|
UltraCompare Professional
|
Free trial version available for 30 days with money back guarantee. |
|
NAPS2
|
Completely free and open-source with no cost or hidden fees. |
|
Text Analyzer
|
Provides a 30-day free trial period before license purchase. |
|
Mendeley Desktop
|
Offers a free basic version with limited storage; paid subscriptions available for advanced features. |
|
Atlantis Word Processor
|
Paid license required; no mention of free trial or free version. |
|
PDFgear
|
Free usage with possible limits; specific pricing options mentioned but not detailed here. |
Choosing the right software isn’t just about features. Size, license type, user ratings, and popularity also matter.
This quick comparison shows how Plagiarism Checker X stacks up against Plagiarism Checker X, Grammarly, Duplicate Cleaner Free, UltraCompare Professional, NAPS2, Text Analyzer, Mendeley Desktop, Atlantis Word Processor and PDFgear in these key areas—helping you find the best alternative for your needs.
Size
|
Plagiarism Checker X
|
10.7MB |
|
Grammarly
|
|
|
Duplicate Cleaner Free
|
62.6MB |
|
UltraCompare Professional
|
58.9MB |
|
NAPS2
|
|
|
Text Analyzer
|
1.5MB |
|
Mendeley Desktop
|
|
|
Atlantis Word Processor
|
3MB |
|
PDFgear
|
128.5MB |
License
|
Plagiarism Checker X
|
Freeware |
|
Grammarly
|
Shareware |
|
Duplicate Cleaner Free
|
Shareware |
|
UltraCompare Professional
|
Shareware |
|
NAPS2
|
Shareware |
|
Text Analyzer
|
Freeware |
|
Mendeley Desktop
|
Shareware |
|
Atlantis Word Processor
|
Shareware |
|
PDFgear
|
Shareware |