Best Code Clone Detection Tools in 2026
Updated
In short: jscpd is ranked #1 of 22 as of 3 October 2026, ahead of Hound and copydetect. The best-ranked option with a free plan is PMD.
22 code clone detection tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
| # | Platform | Score | Why | From | Free plan | Paid from | Clone detection method | |
|---|---|---|---|---|---|---|---|---|
| 1 | jscpd | 8.8 | RecognisedAPIDocumented | Free | — | — | token | View |
| 2 |  Hound | 7.8 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 3 |  copydetect | 7.5 | RecognisedAPIDocumented | — | Yes | — | token | View |
| 4 |  PMD | 7.4 | RecognisedAPIDocumented | Free | Yes | — | — | View |
| 5 |  NiCad | 6.8 | RecognisedAPIDocumented | — | Yes | — | hybrid | View |
| 6 |  Amimica | 6.8 | RecognisedAPIDocumented | — | Yes | — | hybrid | View |
| 7 | Simian Similarity Analyzer | 6.8 | RecognisedAPIDocumented | Free | — | — | text | View |
| 8 |  Duplo | 6.8 | RecognisedAPIDocumented | Free | Yes | — | text | View |
| 9 |  @kongyo2/similarity-ts | 6.7 | RecognisedAPIDocumented | — | Yes | — | ast | View |
| 10 | art-dupl | 6.5 | RecognisedAPIDocumented | — | — | — | ast | View |
| 11 |  dcd | 6.4 | RecognisedAPIDocumented | Free | Yes | — | text | View |
| 12 |  QuickDup | 6.2 | RecognisedAPIDocumented | — | — | — | hybrid | View |
| 13 |  CloneWorks | 6.2 | RecognisedAPIDocumented | Free | Yes | — | token | View |
| 14 |  semdup | 6.0 | RecognisedAPIDocumented | — | — | — | semantic | View |
| 15 |  phpcpd-next | 5.8 | RecognisedAPIDocumented | — | — | — | token | View |
| 16 | CodeMatch | 5.5 | RecognisedAPIDocumented | — | No | — | hybrid | View |
| 17 |  Deckard | 5.3 | RecognisedAPIDocumented | — | — | — | ast | View |
| 18 |  CCFinderSW | 5.2 | RecognisedAPIDocumented | — | — | — | token | View |
| 19 |  DUDE (DUplicates DEtector) | 5.1 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 20 |  dskDitto | 5.0 | RecognisedAPIDocumented | — | Yes | — | — | View |
| 21 |  SourcererCC | 4.9 | RecognisedAPIDocumented | — | — | — | token | View |
| 22 |  CopyPaste | 4.9 | RecognisedAPIDocumented | — | Yes | — | — | View |
Is your platform on this list?
Numbered spots on this list can be sponsored. They are labelled, and the editorial order and scores never change for payment.
Questions about this list
Which code clone detection tool is ranked first on Inferse?
jscpd is ranked #1 of 22 with a score of 8.8. Hound is second and copydetect third.
How many of these have a free plan?
6 of the 22 on this page publish a free plan on their own pricing pages.
How is this list ranked?
Ranked on what each maker publishes, open and connectable first: a public API, open-source code, the depth of its documentation and a free tier to try it on. Model lists are sorted by the figure in their title, exactly as each provider publishes it. Paid placements never change a rank.