Plagiarism Checker X vs Viper
Plagiarism Checker X
plagiarismcheckerx.comViper
scanmyessay.comSide by side
| Figure | Plagiarism Checker X | Viper |
|---|---|---|
| Price from | Free | — |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | — |
| Plans published | 3 | 7 |
| Spec score · AI Plagiarism Checkers | 8.1 (#8) | 6.9 (#23) |
| Spec score · Plagiarism Checkers | 8.0 (#11) | 6.9 (#28) |
| File formats | The software supports text files including Word and PDF documents, with other textual formats also supported. | Viper lists support for formats including HTML, TXT, RTF, XML, Markdown, PDF, DOCX, PPTX, ODT, EPUB, XLSX and more. |
| Headquarters | 733 3rd Avenue, New York City, NY 10017, United States | Fujairah, United Arab Emirates |
| Language support | The software interface is available in English, Spanish, French, German, Italian, Dutch, and Portuguese, and it supports content from hundreds of languages. | Viper says it supports over 100 languages and cross-language matching across more than 30 languages. |
| Purpose | The desktop software checks documents and text for plagiarism and similarity against published web pages. | Viper checks documents for plagiarism and AI-generated content. |
| Reports | Reports highlight matched similarity with colors and references and can be exported as Word or PDF documents. | Viper provides reports with highlighted matches, source URLs and scores, and downloadable PDF reports. |
| Support | The pricing page lists 24/7 customer support with Professional and priority support with Business. | Viper offers support through LiveChat and email for paid scans. |
Plans
Plagiarism Checker X
- BasicFree
- Professional$39.95, paid once
- Business$147.95, paid once
Viper
- Small£5, paid once
- Starter£9, paid once
- Standard£14.95, paid once
- Professional£25.95, paid once
- Advanced£34.95, paid once
- Premium£69.95, paid once
- Ultimate£119.95, paid once
In their own words
Plagiarism Checker X
Plagiarism Checker X is Windows desktop software for checking documents and text against published web pages for plagiarism and similarity. Its online checker compares content with more than 16 billion pages. Bulk Comparison examines multiple documents in repositories, while Side-By-Side Difference places content in two windows to locate matching text. An AI detector indicates whether writing may have come from an AI tool or a human. A readability checker analyzes reading levels, extracts keywords and assesses difficulty. Reports mark matches with colors and references and can export to Word, PDF or Excel. The software accepts Word, PDF, text and other textual formats. Its interface is available in English, Spanish, French, German, Italian, Dutch and Portuguese, with content support for hundreds of languages. The maker says documents remain on the user’s computer and customer content is not copied, stored or sold. Basic is free with limited words and a daily search limit. Professional costs $39.95, paid once; Business costs $147.95, paid once.