Noplag vs Plagiat.pl
Noplag
noplag.comPlagiat.pl
plagiat.plSide by side
| Figure | Noplag | Plagiat.pl |
|---|---|---|
| Price from | $9.99/mo | — |
| Free plan | Yes | — |
| Free trial | Yes | — |
| Open source | Yes | — |
| Web | Yes | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 4 | 3 |
| Spec score · Plagiarism Checkers | 9.2 (#3) | 7.3 (#25) |
| Audience | The pricing page positions Pro for makers and small teams, Premium for agencies and publishers, and Enterprise for universities and regulated organizations. | Its offers are aimed at individual users, colleges and high schools, businesses, publishers, agencies, and other institutions. |
| Headquarters | San Francisco, United States | Warsaw, Poland |
| Integrations | The features page lists Canvas, Moodle, Blackboard, and Brightspace integrations via LTI 1.3. | The Antiplagiarism System is integrated with Editorial System, APD (USOS), Uczelnia XP, OPTIcamp, and other school systems. |
| Support | Free includes community Discord support, Pro includes email support, and Premium includes priority support with a 12-hour response target. | The company lists phone and email support and says it supports institutional implementation and configuration. |
Plans
Plagiat.pl
- Individual document check (Tokens)$3, paid once
- Business subscriptionPriced on request
- Education subscriptionPriced on request
In their own words
Noplag
Noplag is an open-source plagiarism checker with a hosted cloud service and an engine released under Apache 2.0. Its current matching uses winnowing fingerprints and live-web comparison to find verbatim and near-verbatim copying; it does not detect paraphrase. Sources include the open web, Common Crawl, Wikipedia, academic indexes, the Noplag Database and users’ own folders. Submit DOCX, PDF, TXT, ODT or RTF files, paste text or provide a URL. Reports link matches to their sources, display similarity scores and exact overlapping text, and can be exported as PDFs. Detection is calibrated at launch for English, Spanish, Portuguese, Polish and Ukrainian. AI-content detection is marked as coming soon and intended as a separate signal. The free plan allows three checks per month, up to 2,500 words per check, with community Discord support. Pro costs $9.99 a month and includes 50 monthly checks, up to 25,000 words per check, database and academic-index matching, REST API and webhooks, and email support. A 14-day trial is listed.