JPlag vs MOSS
JPlag
jplag.ipd.kit.eduMOSS
theory.stanford.eduSide by side
| Figure | JPlag | MOSS |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 1 | 1 |
| Spec score · Plagiarism Checkers | 8.0 (#10) | 7.7 (#18) |
| Founded | 1996 | 1994 |
| Purpose | JPlag finds pairwise similarities among programs to detect source-code plagiarism and collusion. | MOSS automatically measures program similarity and has primarily been used to detect plagiarism in programming classes. |
Plans
In their own words
JPlag
JPlag is free, open-source software for finding pairwise similarities among submitted programs. It examines program syntax and structure to help detect source-code plagiarism and collusion, especially in student programming exercises, and can also identify duplicated or stolen software parts. It does not compare submissions with the internet. Supported inputs include Java, C, C++, C#, Python, JavaScript, TypeScript, Go, Kotlin, R, Rust, Swift, Scala, LLVM IR, Scheme, EMF, SCXML, text, and multi-language projects. JPlag runs locally, with the project stating that source code and plagiarism results are not sent externally. You can use its command-line interface, Java API, or Maven Central dependency. A bundled report viewer opens generated or existing reports. Base-code directories can exclude shared starter code, while matching-token sensitivity is adjustable. The default report lists up to 2500 comparison pairs, configurable with -n. Running or building it requires Java SE 25.