Best Crossref Similarity Check Alternatives in 2026
Updated
20 platforms from plagiarism checkers ranked against Crossref Similarity Check on the same published basis.
- 1Crossref Similarity Check vs Noplag
- 2Crossref Similarity Check vs PlagAware
- 3Crossref Similarity Check vs Plagiarism Detector
- 4Crossref Similarity Check vs Copyscape
- 5Crossref Similarity Check vs Compilatio AI Detector
- 6Crossref Similarity Check vs Quetext AI Detector
- 7Crossref Similarity Check vs SmallSEOTools Plagiarism Checker
- 8Crossref Similarity Check vs Copyleaks AI Detector
- 10Crossref Similarity Check vs Originality.ai
- 11Crossref Similarity Check vs Plagiarism Checker X
- 12Crossref Similarity Check vs PlagiarismSearch
- 13Crossref Similarity Check vs Plagius
- 14Crossref Similarity Check vs Dolos
- 15Crossref Similarity Check vs Plagiarisma
- 16Crossref Similarity Check vs PrePostSEO Plagiarism Checker
- 17Crossref Similarity Check vs MOSS
- 18Crossref Similarity Check vs StrikePlagiarism
- 19Crossref Similarity Check vs Smodin Plagiarism Checker
- 20Crossref Similarity Check vs DrillBit
- 21Crossref Similarity Check vs Plag
Crossref Similarity Check alternatives compared
| # | Platform | Score | Free plan | From | Runs on |
|---|---|---|---|---|---|
| 1 | Noplag | 8.0 | Free plan | $9.99/mo | API, Linux, Mac, self-hosted, Web, Windows |
| 2 | PlagAware | 7.7 | Free plan | €2.99/mo | API, Web |
| 3 | Plagiarism Detector | 7.7 | Free plan | Free | Web, Windows |
| 4 | Copyscape | 7.6 | Free plan | $4.95/mo | API, self-hosted, Web |
| 5 | Compilatio AI Detector | 7.1 | API, Web | ||
| 6 | Quetext AI Detector | 7.1 | Free plan | $7.99/mo | API, Browser, Web |
| 7 | SmallSEOTools Plagiarism Checker | 7.1 | Free plan | $7.84/mo | API, Browser, Web |
| 8 | Copyleaks AI Detector | 7.0 | $1.17/mo | API, Browser, Web | |
| 10 | Originality.ai | 7.0 | Free plan | $12.95/mo | API, Browser, Web |
| 11 | Plagiarism Checker X | 7.0 | Free plan | Free | Windows |
| 12 | PlagiarismSearch | 7.0 | $27.95/mo | API, Browser, Web | |
| 13 | Plagius | 7.0 | No | $4.90/mo | Mac, Web, Windows |
| 14 | Dolos | 6.9 | Free plan | Free | API, Linux, self-hosted, Web, Windows |
| 15 | Plagiarisma | 6.9 | Free plan | Free | Web, Windows |
| 16 | PrePostSEO Plagiarism Checker | 6.9 | $0.35/mo | Android, API, iOS, Mac, Web, Windows | |
| 17 | MOSS | 6.8 | Free plan | Free | Linux, Web |
| 18 | StrikePlagiarism | 6.7 | No | API, self-hosted, Web | |
| 19 | Smodin Plagiarism Checker | 6.6 | $10/mo | Android, API, Browser, iOS, Web | |
| 20 | DrillBit | 6.4 | No | Android, API, iOS, Web | |
| 21 | Plag | 6.4 | €14.95/mo | Web |
Make your platform an alternative to Crossref Similarity Check
See the priceThe sponsored alternative slot on this page is labelled Sponsored.
Questions about Crossref Similarity Check alternatives
What is the best alternative to Crossref Similarity Check?
Noplag, number 1 in plagiarism checkers with a score of 8.0 out of 10. The others here: PlagAware, Plagiarism Detector, Copyscape and 16 more.
What is the best free alternative to Crossref Similarity Check?
Noplag is the best-ranked alternative with a free plan. 11 of the 20 alternatives here publish a free plan on their own pricing pages.
How are these alternatives ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on.