Best PlagiarismCheck.org Alternatives in 2026
Updated
20 platforms from plagiarism checkers ranked against PlagiarismCheck.org on the same published basis.
- 1PlagiarismCheck.org vs Noplag
- 2PlagiarismCheck.org vs PlagAware
- 3PlagiarismCheck.org vs Copyscape
- 4PlagiarismCheck.org vs Originality.ai
- 5PlagiarismCheck.org vs Quetext AI Detector
- 6PlagiarismCheck.org vs SmallSEOTools Plagiarism Checker
- 7PlagiarismCheck.org vs Dolos
- 8PlagiarismCheck.org vs Compilatio AI Detector
- 9PlagiarismCheck.org vs Copyleaks AI Detector
- 11PlagiarismCheck.org vs PlagiarismSearch
- 12PlagiarismCheck.org vs PrePostSEO Plagiarism Checker
- 13PlagiarismCheck.org vs DupliChecker
- 14PlagiarismCheck.org vs Smodin Plagiarism Checker
- 15PlagiarismCheck.org vs Plagiarism Checker X
- 16PlagiarismCheck.org vs MOSS
- 17PlagiarismCheck.org vs Plagiarisma
- 18PlagiarismCheck.org vs Plagramme
- 19PlagiarismCheck.org vs Scribbr Plagiarism Checker
- 20PlagiarismCheck.org vs Viper
- 21PlagiarismCheck.org vs Plagius
PlagiarismCheck.org alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Noplag | 7.4 | Free plan | $9.99/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | PlagAware | 7.4 | Free plan | €2.99/mo | API, Web |
| 3 | Copyscape | 7.3 | Free plan | $4.95/mo | API, self-hosted, Web |
| 4 | Originality.ai | 7.3 | Free plan | $12.95/mo | API, Browser, Web |
| 5 | Quetext AI Detector | 7.3 | Free plan | $7.99/mo | API, Browser, Web |
| 6 | SmallSEOTools Plagiarism Checker | 7.3 | Free plan | $7.84/mo | API, Browser, Web |
| 7 | Dolos | 7.2 | Free plan | Free | API, Linux, self-hosted, Web, Windows |
| 8 | Compilatio AI Detector | 7.0 | No | — | API, Web |
| 9 | Copyleaks AI Detector | 7.0 | No | $1.17/mo | API, Browser, Web |
| 11 | PlagiarismSearch | 7.0 | No | $27.95/mo | API, Browser, Web |
| 12 | PrePostSEO Plagiarism Checker | 7.0 | No | $0.35/mo | Android, API, iOS, Mac, Web, Windows |
| 13 | DupliChecker | 6.9 | No | $9.99/mo | API, Web |
| 14 | Smodin Plagiarism Checker | 6.9 | No | $10/mo | Android, API, Browser, iOS, Web |
| 15 | Plagiarism Checker X | 5.9 | Free plan | Free | Windows |
| 16 | MOSS | 5.8 | Free plan | Free | Linux, Web |
| 17 | Plagiarisma | 5.8 | Free plan | Free | Web, Windows |
| 18 | Plagramme | 5.5 | No | $14.95/mo | Web |
| 19 | Scribbr Plagiarism Checker | 5.5 | No | — | Web |
| 20 | Viper | 5.5 | No | — | Web |
| 21 | Plagius | 5.4 | No | $4.90/mo | Mac, Web, Windows |
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Questions about PlagiarismCheck.org alternatives
What is the best alternative to PlagiarismCheck.org?
Noplag, number 1 in plagiarism checkers with a score of 7.4 out of 10. The others here: PlagAware, Copyscape, Originality.ai and 16 more.
What is the best free alternative to PlagiarismCheck.org?
Noplag is the best-ranked alternative with a free plan. 10 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it.