Best Code Clone Detection Tools in 2026
Updated
In short: Simian Similarity Analyzer is ranked #1 of 23 as of 4 October 2026, ahead of CloneWorks and dcd. The best-ranked option with a free plan is CloneWorks.
Clone detection tools help you find similar or repeated code so you can inspect it across a project. Compare the listed scan scope, supported languages, and detection methods to see which options cover the code you work with. CI and IDE integration indicate where a tool can connect with your development setup; free plans, paid-from pricing, and self-hosted availability add practical distinctions. Simian Similarity Analyzer and CloneWorks lead the entries, followed by copydetect and dcd, with Duplo, Hound, jscpd, and PMD also among the first options. Weigh the criteria against your codebase and how you want to review potential clones.
23 code clone detection tools ranked on what their makers publish — plans and prices, free tiers, platforms and the facts on their own pages.
Code Clone Detection Tools, ranked on how quickly a newcomer can get going. 7 of the 23 on this page can be tried for free.
- 1 Simian Similarity AnalyzerFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 2 CloneWorksFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 3 dcdFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 4 DuploFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 5 jscpdFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 6 PMDFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 7 NiCadFree plan
- Free to practise on: yes
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 8 copydetect
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 9 QuickDup
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 10 Algo VPN
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 11 Hound
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: yes
- 12 art-dupl
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 13 CCFinderSW
- Free to practise on: not on record
- Free trial: not on record
- Well documented: yes
- Runs where you work: not on record
- 14 Deckard
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: yes
- 15 @kongyo2/similarity-ts
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 16 Amimica
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 17 phpcpd-next
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 18 semdup
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 19 SourcererCC
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 20 CodeMatch
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 21 CopyPaste
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 22 dskDitto
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
- 23 DUDE (DUplicates DEtector)
- Free to practise on: not on record
- Free trial: not on record
- Well documented: not on record
- Runs where you work: not on record
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 The Geeks Club?
Simian Similarity Analyzer is ranked #1 of 23 with a score of 7.2. CloneWorks is second and dcd third.
How many of these have a free plan?
7 of the 23 on this page publish a free plan on their own pricing pages.
How is this list ranked?
Ranked on how quickly a newcomer can get going: documentation depth, a free tier or trial, and the platforms it runs on. Paid placements never change a rank.