copydetect vs dcd
copydetect
github.comdcd
github.comSide by side
| Figure | copydetect | dcd |
|---|---|---|
| Price from | — | Free |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | — |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | — |
| Self-hosted | Yes | — |
| Plans published | 0 | 2 |
| Spec score · Code Clone Detection Tools | 7.8 (#6) | 7.8 (#8) |
| Installation | The project documents installation with pip and requires Python 3.7 or later. | Users with Go 1.19 or newer can install dcd with go install github.com/boyter/dcd@latest. |
| Language coverage | Pygments tokenization gives copydetect support for all 500+ languages that Pygments can detect and tokenize. | The comparison table says dcd provides language-aware parsing via scc for 250+ languages. |
| License | Copydetect is released under the MIT License. | The project is licensed under the GNU Affero General Public License 3.0. |
| Purpose | Copydetect detects likely code plagiarism by comparing code directories and generating an HTML report that displays copied slices. | dcd is a duplicate code detector designed to identify duplicate code within a project. |
Plans
In their own words
copydetect
copydetect is a free tool for comparing code directories and producing an HTML report that highlights matching code slices. It uses Winnowing document fingerprinting, an approach also used by MOSS, and Pygments tokenization for the 500-plus languages Pygments can detect and tokenize. Users can compare test directories with reference directories such as previous submissions, and exclude boilerplate directories from matches. Noise, guarantee and display thresholds adjust what is detected and shown in reports. Install the package with pip; it requires Python 3.7 or later. The command-line tool recursively searches supplied directories, while its Python API supports comparisons and HTML report generation. Reports can be saved to a specified path, highlighted code can be truncated, and custom CSS can be linked. Configuration is available through command-line arguments or a JSON file. The package is MIT-licensed and classified for Education with Beta development status. Its documentation cautions that it may not catch plagiarism designed to evade detection and that a match does not establish that plagiarism occurred.