JPlag vs Smodin Plagiarism Checker
JPlag
jplag.ipd.kit.edu
Smodin Plagiarism Checker
smodin.ioSide by side
| Figure | JPlag | Smodin Plagiarism Checker |
|---|---|---|
| Price from | Free | $10/mo |
| Free plan | Yes | — |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| Linux | Yes | — |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 1 | 4 |
| Spec score · Plagiarism Checkers | 8.0 (#10) | 7.4 (#24) |
| Purpose | JPlag finds pairwise similarities among programs to detect source-code plagiarism and collusion. | The plagiarism checker compares text against web and academic sources and returns similarity scores, matched sources, and highlighted sections. |
| Support | The project directs users to report bugs and issues and provides [email protected] for other inquiries. | Smodin lists support by email and phone, and its help center asks users to include a screenshot and login email when requesting help. |
Plans
Smodin Plagiarism Checker
- Starter$10 a month
- Premium$16 a month
- Starter$10 a month
- Premium$16 a month
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.
Smodin Plagiarism Checker
Smodin Plagiarism Checker has no write-up on Specifiction yet; its figures are above.