Noplag
8.3#1 in plagiarism checkersFrom $9.99 a monthFree planWebAPILinuxmacOS
VisitNoplag vs StrikePlagiarism
StrikePlagiarism
6.4#17 in plagiarism checkers$2.50 one-timeWebAPISelf-hosted
VisitWhat both publish
| Fact | Noplag | StrikePlagiarism |
|---|---|---|
| AI detection | AI-content detection is marked as coming soon and is intended to appear as a separate signal. | The AI module is integrated into the Similarity Report and provides fragment-level probability analysis. |
| Founded | 2014 | 2002 |
| Headquarters | San Francisco, United States | Warsaw, Poland |
| Integrations | The features page lists Canvas, Moodle, Blackboard, and Brightspace integrations via LTI 1.3. | Listed integrations include Moodle, Canvas, Blackboard, Brightspace, Schoology, OJS, Google Classroom and Microsoft Teams, with API, LTI 1.3, LDAP and SSO options. |
Noplag plans
- FreeFree
- Pro$9.99 a month
- Premium$19.99 a month
- EnterprisePriced on request
StrikePlagiarism plans
- Individual token$2.50, paid once
- Corporate price per accountPriced on request
- Corporate price per documentPriced on request
- Corporate price per pagePriced on request
Pick Noplag if…
Noplag may suit people checking documents for verbatim or near-verbatim overlap, including makers, small teams, agencies, publishers, and educational organizations. The listed plans range from a three-check monthly free tier to custom Enterprise arrangements.
Pick StrikePlagiarism if…
StrikePlagiarism suits schools, universities, publishers, and other organizations checking originality, paraphrasing, or AI-generated text. Individual users can use token checks but cannot access university databases or LMS/API integrations.