Comparison of anti-plagiarism software
The following tables compare software used for plagiarism detection.
General
| Software | Developer | First public release | Latest stable version | License | Deployment options | Scripts supported | Notes |
| Copyscape | Indigo Stream Technologies, Ltd. | 2004 | freemium | SaaS | Latin | Targeted at website managers. | |
| Copyleaks | 2015 | ||||||
| Grammarly | Grammarly, Inc. | 2016 | freemium | SaaS | Latin | Checks against ProQuest databases and web pages. | |
| HelioBLAST | Virginia Bioinformatics Institute | ? | Latin | Submissions are limited to 1,000 words. Checking against abstract and titles in Medline/PubMed. | |||
| iThenticate | iParadigms | 2004 | 2017 | proprietary | SaaS | Latin | |
| PlagScan | PlagScan GmbH | 2008 | limited | SaaS, On-Premises | Latin, Cyrillic & Arabic | Submissions are checked against online documents, a shared repository, and the user's own repository. | |
| PlagTracker | Devellar | 2011 | freemium | SaaS | Latin, Cyrillic | Rated as "Useless for academic purposes" by Plagiats Portal | |
| Turnitin | iParadigms | 1997 | proprietary | SaaS | Latin & multiple scripts through translation | Automatically stores uploaded texts in its own database. | |
| Unicheck | Unicheck | 2014 | SaaS | proprietary | SaaS | Latin, Cyrillic | Pricing "per page" based on 137.5 words per nominal page. |