The Best Code Clone Detection Tools in 2026
We researched code clone detection tools from official websites, including pricing pages, plan tables, and product documentation. Products are ranked on their core job, value for money, and verified features for finding duplicated or highly similar code across files, repositories, and versions.
Our top picks
-
Top ranked
jscpd#1 of 239.4/10A broad, self-hosted clone detector with strong CI, reporting, and history analysis.
Open source
-
Runner-up
art-dupl#2 of 239.2/10A focused, self-hosted clone analyzer for Go teams building duplication checks into CI.
Open source
-
Top-ranked free plan
PMD#3 of 239.0/10A strong open-source choice for teams pairing clone detection with broad static analysis.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 23 tools, best first
-
Best forBroad, CI-driven multi-format clone detection
A broad, self-hosted clone detector with strong CI, reporting, and history analysis.
- CI integration
- Self-hosted option
9.4/10★★★★★Visit jscpd -
Best forGo teams needing deep CI clone analysis
A focused, self-hosted clone analyzer for Go teams building duplication checks into CI.
- CI integration
- Self-hosted option
9.2/10★★★★★Visit art-dupl -
Best forTeams wanting clones plus broad static analysis
A strong open-source choice for teams pairing clone detection with broad static analysis.
9.0/10★★★★☆Visit PMD -
Best forResearch-grade configurable clone detection
A configurable, self-hosted choice for exact and near-miss clone analysis.
- Self-hosted option
8.8/10★★★★☆Visit NiCad -
Best forOpen-source hybrid detection with developer tooling
An open-source hybrid detector for finding exact, renamed, near-duplicate, and recurring code.
- Self-hosted option
8.7/10★★★★☆Visit Amimica -
Best forTypeScript repositories needing CI clone gates
A focused, self-hosted CLI for TypeScript clone checks and CI gates.
- CI integration
- Self-hosted option
8.6/10★★★★☆Visit kongyo2 -
Best forTeams reviewing clones in GitHub pull requests
An open-source candidate finder for reviewing likely code duplicates in pull requests.
- CI integration
- Self-hosted option
8.5/10★★★★☆Visit QuickDup -
Best forSemantic duplicate detection with local inference
A self-hosted semantic clone detector with repository diff and CI support.
- CI integration
- Self-hosted option
8.4/10★★★★☆Visit semdup -
Best forMature language-agnostic pipeline scanning
A mature, configurable CLI scanner for repository-wide duplicate-code analysis.
- CI integration
- Self-hosted option
8.3/10★★★★☆Visit Simian -
Best forSimple cross-platform source-block scanning
A focused, free CLI scanner for finding duplicated source blocks across repositories.
- CI integration
- Self-hosted option
8.2/10★★★★☆Visit Duplo -
Best forPHP projects needing CI-ready clone reports
A focused open-source choice for PHP teams that need detailed clone reports in CI.
- CI integration
- Self-hosted option
8.1/10★★★★☆Visit phpcpd-next -
Best forLarge multi-language commercial comparisons
A focused investigation tool for ranking code similarities across large, multi-language repositories.
8.0/10★★★★☆Visit CodeMatch -
Best forLightweight fuzzy duplicate checks in CI
A focused, self-hosted option for fuzzy duplicate checks in CI.
- CI integration
- Self-hosted option
7.9/10★★★★☆Visit dcd -
Best forSelf-hosted repository search with editor access
A free, editor-connected repository search engine with broad source-control support.
7.8/10★★★★☆Visit Hound -
Best forLarge-scale configurable token-based scans
A configurable, self-hosted token-based detector for repository-scale clone analysis.
- Self-hosted option
7.7/10★★★★☆Visit CloneWorks -
Best forWindows users needing token clone reports
A focused open-source Java CLI for token-based clone reports on Windows.
- Self-hosted option
7.6/10★★★★☆Visit CCFinderSW -
Best forCross-platform AST experiments for Java and Solidity
An open-source AST tool for local clone analysis across Java and Solidity projects.
- Self-hosted option
7.5/10★★★★☆Visit Deckard -
Best forPython users wanting visual copy reports
A free Python tool for visual repository clone reports, without CI or IDE integration.
- Self-hosted option
7.4/10★★★★☆Visit copydetect -
Best forScalable token-level research workflows
A configurable, self-hosted detector for repository-scale token clone analysis.
- Self-hosted option
7.3/10★★★★☆Visit SourcererCC -
Best forSemantic comparisons across Git repositories
A focused, self-hosted CLI for finding related code across repositories.
- Self-hosted option
7.2/10★★★★☆Visit Vendetect -
Best forGeneral duplicate-file management, not code clones
A capable open-source duplicate-file manager, but not a source-code clone detector.
6.4/10★★★☆☆Visit PJDude -
Best forLocal duplicate-file cleanup, not code clones
A capable local duplicate-file cleaner, but not a code-clone analysis tool.
6.2/10★★★☆☆Visit dskDitto -
Best forClipboard history, not code clone detection
A capable private clipboard manager, but not a code clone detection tool.
6.0/10★★★☆☆Visit CopyPaste
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Clone detection method | Scan scope | CI integration | Self-hosted option | Score |
|---|---|---|---|---|---|---|---|---|
| 1 | jscpd | Free | Token | Repository | Yes | Yes | 9.4 | |
| 2 | art-dupl | Free | Ast | Repository | Yes | Yes | 9.2 | |
| 3 | PMD | Yes | Free | 9.0 | ||||
| 4 | NiCad | Yes | Free | Hybrid | Repository | Yes | 8.8 | |
| 5 | Amimica | Yes | Free | Hybrid | Repository | No | Yes | 8.7 |
| 6 | @kongyo2/similarity-ts | Yes | Free | Ast | Repository | Yes | Yes | 8.6 |
| 7 | QuickDup | Free | Hybrid | Repository | Yes | Yes | 8.5 | |
| 8 | semdup | Free | Semantic | Repository | Yes | Yes | 8.4 | |
| 9 | Simian Similarity Analyzer | Free | Text | Repository | Yes | Yes | 8.3 | |
| 10 | Duplo | Yes | Free | Text | Repository | Yes | Yes | 8.2 |
| 11 | phpcpd-next | Free | Token | Repository | Yes | Yes | 8.1 | |
| 12 | CodeMatch | No | Hybrid | Repository | 8.0 | |||
| 13 | dcd | Yes | Free | Text | Repository | Yes | Yes | 7.9 |
| 14 | Hound | Yes | Free | 7.8 | ||||
| 15 | CloneWorks | Yes | Free | Token | Repository | Yes | 7.7 | |
| 16 | CCFinderSW | Free | Token | Yes | 7.6 | |||
| 17 | Deckard | Free | Ast | Repository | No | Yes | 7.5 | |
| 18 | copydetect | Yes | Free | Token | Repository | No | Yes | 7.4 |
| 19 | SourcererCC | Free | Token | Repository | Yes | 7.3 | ||
| 20 | Vendetect | Free | Semantic | Repository | Yes | 7.2 | ||
| 21 | DUDE (DUplicates DEtector) | Yes | Free | 6.4 | ||||
| 22 | dskDitto | Yes | Free | 6.2 | ||||
| 23 | CopyPaste | Yes | Free | 6.0 |
Head-to-head All 28 comparisons →
- jscpd vs art-dupl
- jscpd vs PMD
- jscpd vs NiCad
- jscpd vs Amimica
- jscpd vs @kongyo2/similarity-ts
- jscpd vs QuickDup
- jscpd vs semdup
- art-dupl vs PMD
- art-dupl vs NiCad
Explore other topics All topics →
- AI Tools 303 directories · 8,269 tools ranked AI Writing Tools · AI Video Generators · Text-to-Speech Software
- Web Hosting & Domains 275 directories · 6,107 tools ranked Shared Web Hosting · Managed Cloud Hosting · Dedicated Server Hosting
- Productivity 157 directories · 4,948 tools ranked Note-Taking Apps · Calendar Apps · Project Management Software
- Marketing 135 directories · 3,977 tools ranked SEO Tools · Influencer Marketing Platforms · Email Marketing Software
- Sales & CRM 152 directories · 4,161 tools ranked Real Estate CRM Software · CRM Software · Proposal Software
- Customer Service 55 directories · 1,547 tools ranked Chatbot Builders · Knowledge Base Software · Call Center Software
How we rank code clone detection tools
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update