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Best Code Duplication Detection Tools 2026
Every product here is ranked by Samsung Mobile US Press's record score: what its maker publishes about it, where it runs (Android first), whether it is free to try, and how recently the facts were read.
02
Dolos
Dolos suits teachers checking programming tests, exams, or exercises where limited collaboration is permitted.
WebWindowsMac+3 Record5.6 Visit
03
jscpd
It suits developers who want to check repositories for duplicated code locally or in CI/CD.
WindowsMacLinux+2 Record5.4 Visit
04
Duplo
Duplo suits developers reviewing large repositories for repeated code, including teams that want duplicate checks in a build workflow.
WindowsMacLinux Record4.9 Visit
05
NiCad
NiCad suits developers and teams that need to locate similar code across repositories and want control over comparison settings.
WindowsMacLinux+1 Record4.9 Visit
6
PMD
WindowsMacLinux+1 Free plan Record4.9 Visit PMD may suit developers and teams seeking a free code analyzer with customizable rules, command-line use, or build and CI integration.
7
Simian Similarity Analyzer
WindowsMacLinux Free plan Record4.9 Visit Simian suits developers who want to locate duplicated text in repositories and run scans locally, from scripts, or in a build pipeline.
9
Deckard
WindowsMacLinux+2 Free plan Record4.6 Visit Deckard suits developers or teams analyzing application source repositories for duplicated code.
10
phpcpd-next
LinuxAPISelf-hosted Free plan Record4.3 Visit It suits PHP developers who want repository-wide clone detection and CI reporting.
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