Best Plagiarism Checkers in 2026
Updated
31ranked
0free plans on this page
11 Oct 2026last checked
Plagiarism Checkers, ranked on how quickly a newcomer can get going.
- 26 Scribbr Plagiarism Checker
- Well documented: yes
- Runs where you work: no
- 27 Viper
- Free trial: no
- Well documented: yes
- Runs where you work: no
- 28 iThenticate
- Free to practise on: no
- Well documented: yes
- Runs where you work: no
- 29 Plagiat.pl
- Free to practise on: no
- Well documented: yes
- Runs where you work: no
- 30 Turnitin AI Writing Detection
- Well documented: yes
- Runs where you work: no
- 31 Red Paper
- Well documented: no
- Runs where you work: no
Compare all 6 in a table
| # | Platform | Score | Free plan | Paid from | Web source matching | Academic source matching |
|---|---|---|---|---|---|---|
| 26 | Scribbr Plagiarism Checker | 6.3 | Yes | Yes | Yes | |
| 27 | Viper | 6.2 | No | |||
| 28 | iThenticate | 6.1 | No | Yes | Yes | |
| 29 | Plagiat.pl | 6.1 | No | Yes | Yes | |
| 30 | Turnitin AI Writing Detection | 6.0 | No | Yes | Yes | |
| 31 | Red Paper | 5.9 | Yes | Yes |