It suits developers who want to check repositories for duplicated code locally or in CI/CD.
Free plan Open source WindowsMacLinuxAPISelf-hosted
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Best Code Clone Detection Tools 2026
Facts read 20 Sep 2026 – 15 Oct 2026
Repeated or similar code can be difficult to spot across a codebase, and clone detection tools are designed to help locate it for review. Compared on supported languages, scan scope, and clone detection method, the entries offer ways to match a tool to the code you want to inspect. CI and IDE integrations indicate where results can connect with development workflows; self-hosting, free-plan availability, and paid-from pricing add practical comparison points. jscpd, PMD, and NiCad are among the tools shown, alongside art-dupl and Simian Similarity Analyzer. Consider the languages and portions of your projects that matter, as well as how you prefer to examine findings.
The standings: top 10
| Name | In a line | Record score | Price from | Try it free | Runs on | Facts read |
|---|---|---|---|---|---|---|
| 01 jscpd | It suits developers who want to check repositories for duplicated code locally or in CI/CD. | 5.4 | Free plan | Free plan | Windows, Mac, Linux, API | 15 Oct 2026 |
| 02 Duplo | Duplo suits developers reviewing large repositories for repeated code, including teams that want duplicate checks in a build workflow. | 4.8 | Free plan | Free plan | Windows, Mac, Linux | 29 Sep 2026 |
| 03 NiCad | NiCad suits developers and teams that need to locate similar code across repositories and want control over comparison settings. | 4.8 | Free plan | Free plan | Windows, Mac, Linux, Self-hosted | 4 Oct 2026 |
| 04 PMD | PMD may suit developers and teams seeking a free code analyzer with customizable rules, command-line use, or build and CI integration. | 4.8 | Free plan | Free plan | Windows, Mac, Linux, Self-hosted | 2 Oct 2026 |
| 05 Simian Similarity Analyzer | Simian suits developers who want to locate duplicated text in repositories and run scans locally, from scripts, or in a build pipeline. | 4.8 | Free plan | Free plan | Windows, Mac, Linux | 30 Sep 2026 |
| 06 Deckard | Deckard suits developers or teams analyzing application source repositories for duplicated code. | 4.6 | Free plan | Free plan | Windows, Mac, Linux, API | 7 Oct 2026 |
| 07 QuickDup | QuickDup suits development teams and individuals who want heuristic duplicate-code candidates for AI-assisted or human review. | 4.6 | Free plan | Free plan | Windows, Mac, Linux | 5 Oct 2026 |
| 08 CCFinderSW | CCFinderSW suits developers who want to find token-based code clones from a Windows command line. | 4.5 | Free plan | Free plan | Windows | 9 Oct 2026 |
| 09 CloneWorks | CloneWorks suits developers or researchers who need to prepare source code and locate clones across supported languages. | 4.5 | Free plan | Free plan | Windows, Mac, Linux | 3 Oct 2026 |
| 10 CodeMatch | It suits examiners and reviewers comparing repositories or directories for possible code reuse. | 4.5 | Free plan | Free plan | Windows | 8 Oct 2026 |
02
Duplo
Duplo suits developers reviewing large repositories for repeated code, including teams that want duplicate checks in a build workflow.
WindowsMacLinux Record4.8 Visit
03
NiCad
NiCad suits developers and teams that need to locate similar code across repositories and want control over comparison settings.
WindowsMacLinux+1 Record4.8 Visit
04
PMD
PMD may suit developers and teams seeking a free code analyzer with customizable rules, command-line use, or build and CI integration.
WindowsMacLinux+1 Record4.8 Visit
05
Simian Similarity Analyzer
Simian suits developers who want to locate duplicated text in repositories and run scans locally, from scripts, or in a build pipeline.
WindowsMacLinux Record4.8 Visit
6
Deckard
WindowsMacLinux+2 Free plan Record4.6 Visit Deckard suits developers or teams analyzing application source repositories for duplicated code.
7
QuickDup
WindowsMacLinux Free plan Record4.6 Visit QuickDup suits development teams and individuals who want heuristic duplicate-code candidates for AI-assisted or human review.
8
CCFinderSW
Windows Free plan Record4.5 Visit CCFinderSW suits developers who want to find token-based code clones from a Windows command line.
9
CloneWorks
WindowsMacLinux Free plan Record4.5 Visit CloneWorks suits developers or researchers who need to prepare source code and locate clones across supported languages.
10
CodeMatch
Windows Free plan Record4.5 Visit It suits examiners and reviewers comparing repositories or directories for possible code reuse.
11
copydetect
WindowsMacLinux+2 Free plan Record4.5 Visit copydetect may suit educators or developers who need to compare code submissions with reference or boilerplate directories.
12
CopyPaste
WindowsMac Free plan Record4.5 Visit It suits Windows and macOS users who frequently copy and paste and want clipboard history stored on their device.
14
Hound
WebMacLinux+2 Free plan Record4.5 Visit Hound suits developers and teams that need regex-based searching across repositories they control.
15
dskDitto
MacLinux Free plan Record4.4 Visit It suits Linux and macOS users who want command-line duplicate scanning with detailed filters and export options.
17
phpcpd-next
LinuxAPISelf-hosted Free plan Record4.2 Visit It suits PHP developers who want repository-wide clone detection and CI reporting.
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