Plagiarisma
8.0#2 in plagiarism checkersFrom $99 a yearFree planAndroidWebAPIExtension
VisitPlagiarisma vs Viper
What both publish
| Fact | Plagiarisma | Viper |
|---|---|---|
| File formats | Supported uploads include PDF, DOCX, RTF, TXT, HTML, PPTX, XLSX, XLS, FB2, ODT, EPUB, and MS Word DOC. | Viper lists support for formats including HTML, TXT, RTF, XML, Markdown, PDF, DOCX, PPTX, ODT, EPUB, XLSX and more. |
| Headquarters | 71-75 Shelton St, London WC2H 9JQ, United Kingdom | Fujairah, United Arab Emirates |
| Intended users | The homepage describes the checker as designed for students, bloggers, and freelance writers. | Viper says it is designed for students and also serves institutions, schools, universities, businesses and professionals. |
| Language support | The checker advertises support for more than 190 languages. | Viper says it supports over 100 languages and cross-language matching across more than 30 languages. |
| Purpose | The online checker scans text against web sources, books, and academic papers for originality. | Viper checks documents for plagiarism and AI-generated content. |
| Support | The contact page lists [email protected] and says premium members should include a valid order ID when reporting issues or sending suggestions. | Viper offers support through LiveChat and email for paid scans. |
Plagiarisma plans
- Plagiarisma Desktop Plagiarism CheckerFree
- Standard checksFree
- One-day subscription$2, paid once
- One-month subscription$10, paid once
- Three-month subscription$25, paid once
- Six-month subscription$49, paid once
Viper plans
- 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
Pick Plagiarisma if…
Plagiarisma is aimed at students, bloggers, and freelance writers who want to check text originality. Its Windows tools and Google Docs add-on may also suit people who want paraphrasing or AI detection alongside plagiarism checking.
Pick Viper if…
Viper may suit students checking documents, as well as institutions, schools, universities, businesses, and professionals. Its browser-based access and broad file-format support may fit users working across different platforms.