Best Plagiarism Checkers in 2026
Updated
31ranked
1free plans on this page
$4.90/molowest paid tier
9 Oct 2026last checked
Plagiarism Checkers, one module each.
- 26 Viper DOCS 5.5
- 27 Plagius FREE noDOCS 5.4$4.90/mo
- 28 Plagiat.pl FREE noDOCS 5.3
- 29 Turnitin AI Writing Detection DOCS 5.3
- 30 Red Paper DOCS 5.2
- 31 JPlag DOCS 5.1Free
Compare all 6 in a table
| # | Platform | Score | Free plan | Free plan | Paid from | Web source matching | Academic source matching |
|---|---|---|---|---|---|---|---|
| 26 | Viper | 5.5 | No | ||||
| 27 | Plagius | 5.4 | No | No | |||
| 28 | Plagiat.pl | 5.3 | No | No | Yes | Yes | |
| 29 | Turnitin AI Writing Detection | 5.3 | No | Yes | Yes | ||
| 30 | Red Paper | 5.2 | Yes | Yes | |||
| 31 | JPlag | 5.1 | Free plan | No | No |