Codeleaks vs Noplag
Codeleaks
copyleaks.com
Noplag
noplag.comSide by side
| Figure | Codeleaks | Noplag |
|---|---|---|
| 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 | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 1 | 4 |
| Spec score · Plagiarism Detection Software | 7.6 (#21) | 9.1 (#4) |
| Compliance | The product page states that Copyleaks is GDPR compliant and SOC 2 and SOC 3 certified. | The company states GDPR/UK GDPR readiness, FERPA coverage, EU data residency and WCAG 2.1 AA goals, but no SOC 2 or ISO 27001 certification yet. |
| Headquarters | New York, NY, United States | San Francisco, United States |
| Security | The page describes a cloud-based system with 256-bit encryption, SSL, and HTTPS data transfer. | Noplag says it encrypts data in transit and at rest and does not yet hold formal attestations such as SOC 2. |
| Support | The Codeleaks page says a dedicated account manager supports onboarding and integration. | Free includes community Discord support, Pro includes email support, and Premium includes priority support with a 12-hour response target. |
Plans
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.