Best Plag.ai Alternatives in 2026
Updated
20 apps from plagiarism detection software ranked against Plag.ai on the same published basis.
- 1Plag.ai vs Plagium
- 2Plag.ai vs Noplag
- 3Plag.ai vs SmallSEOTools Plagiarism Checker
- 4Plag.ai vs PlagiarismCheck.org
- 5Plag.ai vs Originality.ai
- 6Plag.ai vs DupliChecker
- 7Plag.ai vs Plagiarisma
- 8Plag.ai vs PlagiarismDetector.net
- 9Plag.ai vs Quetext AI Detector
- 10Plag.ai vs DrillBit
- 11Plag.ai vs Pangram
- 12Plag.ai vs Winston AI
- 13Plag.ai vs iThenticate
- 14Plag.ai vs GPTZero
- 15Plag.ai vs Scribbr Plagiarism Checker
- 16Plag.ai vs JPlag
- 17Plag.ai vs Copyleaks AI Detector
- 18Plag.ai vs Dolos
- 19Plag.ai vs Noplag Engine
- 21Plag.ai vs Copyscape
Plag.ai alternatives compared
| # | App | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Plagium | 8.9 | Free plan | Free | Android, iOS, Web |
| 2 | Noplag | 7.9 | Free plan | $9.99/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 3 | SmallSEOTools Plagiarism Checker | 7.6 | Free plan | $7.84/mo | API, Browser, Web |
| 4 | PlagiarismCheck.org | 7.4 | No | — | API, Browser, Web |
| 5 | Originality.ai | 7.4 | Free plan | $12.95/mo | API, Browser, Web |
| 6 | DupliChecker | 7.2 | No | $9.99/mo | API, Web |
| 7 | Plagiarisma | 7.2 | Free plan | Free | Web, Windows |
| 8 | PlagiarismDetector.net | 6.9 | No | $9.99/mo | API, Browser, Web |
| 9 | Quetext AI Detector | 6.9 | Free plan | $7.99/mo | API, Browser, Web |
| 10 | DrillBit | 6.8 | No | — | Web |
| 11 | Pangram | 6.8 | Free plan | $1.67/mo | API, Browser, Web |
| 12 | Winston AI | 6.8 | Free plan | $5/mo | API, Browser, Web |
| 13 | iThenticate | 6.7 | No | — | Web |
| 14 | GPTZero | 6.7 | Free plan | $8.33/mo | API, Browser, Web |
| 15 | Scribbr Plagiarism Checker | 6.6 | No | — | Web |
| 16 | JPlag | 6.3 | Free plan | Free | API, Linux, Mac, self-hosted, Windows |
| 17 | Copyleaks AI Detector | 6.2 | No | $1.17/mo | API, Browser, Web |
| 18 | Dolos | 6.2 | Free plan | Free | API, Linux, self-hosted, Web, Windows |
| 19 | Noplag Engine | 6.1 | Free plan | $9.99/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 21 | Copyscape | 5.8 | No | — | Web |
Make your app an alternative to Plag.ai
See the priceThe sponsored alternative slot on this page is labelled and never changes the order above.
Questions about Plag.ai alternatives
What is the best alternative to Plag.ai?
Plagium, number 1 in plagiarism detection software with a score of 8.9 out of 10. The others here: Noplag, SmallSEOTools Plagiarism Checker, PlagiarismCheck.org and 16 more.
What is the best free alternative to Plag.ai?
Plagium is the best-ranked alternative with a free plan. 12 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked mobile-first: a phone app alongside the web or desktop product, a free tier and the depth of its documentation. Paid placements never change a rank.