Codequiry vs JPlag
Codequiry
codequiry.comJPlag
github.comSide by side
| Figure | Codequiry | JPlag |
|---|---|---|
| Price from | €25.76/mo | Free |
| Free plan | — | Yes |
| Free trial | Yes | — |
| Open source | — | Yes |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 4 | 2 |
| Spec score · Plagiarism Detection Software | 8.6 (#10) | 8.8 (#9) |
| Languages | Codequiry says it supports 65+ programming languages, including Python, Java, C/C++, JavaScript, C#, Go, and Rust. | The README lists support for Java, C, C++, C#, Python, JavaScript, TypeScript, Go, Kotlin, R, Rust, Swift, Scala, LLVM IR, Scheme, EMF, SCXML, text, and multi-language submissions, with varying maturity levels. |
| Purpose | Codequiry is a source code plagiarism and AI-detection platform built to help verify that submitted code is the student's own work. | JPlag finds pairwise similarities among programs to detect source-code plagiarism and collusion. |
| Support | The pricing page lists customer support on Advanced and priority customer support on the Rapid add-on. | The project directs users to report bugs and issues on GitHub and provides a Q&A discussion section. |
Plans
Codequiry
- Grow€25.76 a month
- Rapid€41.40 a month
- Advanced€91.08 a month
- Scale€275.08 a month
In their own words
Codequiry
Codequiry checks submitted source code for plagiarism and AI-generated code, helping educators verify that student work is their own. It compares submissions with peer work, web sources, and historical material. The company says more than 20 analysis engines examine code structure and logic, not just textual matches, and that the system flags code associated with ChatGPT, GitHub Copilot, Claude, and Gemini. It supports more than 65 programming languages, including Python, Java, C/C++, JavaScript, C#, Go, and Rust. Instructors can review similarity scores and side-by-side matches, with matching lines highlighted. Grow includes a web dashboard, desktop client, and API/CLI access; all three listed plans include unlimited MCP calls. Advanced includes LMS integrations, while Scale offers custom LMS and SIS integrations built to spec. The pricing page states FERPA and GDPR compliance, SOC 2 Type II certification, TLS 1.3 encryption, and AES-256 encryption at rest. Uploaded code on plans without Rapid may be retained indefinitely in an anonymized comparison corpus and cannot be deleted on request. Grow costs €25.76 a month; a one-day trial is available and there is no free plan.
JPlag
JPlag is free software for finding pairwise similarities among programs that may indicate source-code plagiarism or collusion. It examines programming-language syntax and program structure, helping identify overlap even when code has been partly obfuscated. Analysis runs locally on the user’s machine, and the project says no data is sent externally. Comparisons are between submitted programs rather than internet sources. Listed language support includes Java, C, C++, C#, Python, JavaScript, TypeScript, Go, Kotlin, R, Rust, Swift, Scala, LLVM IR, Scheme, EMF, SCXML, text, and multi-language submissions, with varying maturity. Users can run the command-line interface or Java API, launch a report viewer from the CLI, or add JPlag through Maven Central. Reports show at most 2,500 pairs by default, adjustable with the -n option. Lower minimum matching-token lengths increase sensitivity but can also increase false positives. Running or building requires Java SE 25.