Best JPlag Alternatives in 2026
The top JPlag alternatives are jscpd, PMD and Avidemux: 15 code duplication detection tools our editors would look at instead of JPlag, in our ranking order.
JPlag: A free, syntax-aware tool for pairwise program-similarity analysis across 20 languages. Where it falls short: focused on pairwise analysis rather than duplication gates.
Switching from JPlag? For most code duplication detection tools buyers the best JPlag alternative is jscpd, built for teams needing broad, CI-ready clone analysis. On a budget, Fallow starts at $20/seat/mo. Simian Similarity Analyzer offers the most supported languages (19).
Why People Look for a JPlag Alternative
- Focused on pairwise analysis rather than duplication gates
- No CI pull-request reporting or trend visualisation
- Self-hosted setup relies on community support
- No duplication gates — 2 of the alternatives below have it
Quick Picks by What You Need
- Best overalljscpd8.8
Teams needing broad, CI-ready clone analysis
Visit jscpd - Lowest priceFallow6.9
Paid plans from $20/seat/mo
Visit Fallow - Best free optionjscpd8.8
Has a free plan
Visit jscpd - Most supported languagesSimian Similarity Analyzer6.6
19
Visit Simian Similarity Analyzer - Best for duplication gatesFallow6.9
Duplication gates (JPlag: no)
Visit Fallow
All 15 JPlag Alternatives, Ranked
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.
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Best forTeams needing broad, CI-ready clone analysis
- Better than JPlag:
- Editor score 8.8 vs 6.7
A self-hosted, open-source clone analyzer with broad format support and CI reporting.
8.8/10★★★★☆Visit jscpd -
Best forTeams wanting static analysis with CPD
- Better than JPlag:
- Editor score 8.5 vs 6.7
PMD combines configurable static analysis with CPD copy-paste detection across development workflows.
8.5/10★★★★☆Visit PMD -
Best forBasic video editing on a desktop
- Better than JPlag:
- Editor score 7.0 vs 6.7
Avidemux handles basic video processing, but it is not a code-duplication detector.
7.0/10★★★★☆Visit Avidemux -
Best forSmall teams enforcing duplication gates in CI
- Better than JPlag:
- Duplication gates
- Editor score 6.9 vs 6.7
A free TypeScript and JavaScript duplication scanner with CI gates and optional paid runtime insights.
- Duplication gates
- Near-duplicate detection
6.9/10★★★☆☆Visit Fallow -
Best forGo teams wanting AST-based CI checks
- Better than JPlag:
- Editor score 6.8 vs 6.7
A self-hosted Go and Templ duplication checker with AST matching and CI workflows.
6.8/10★★★☆☆Visit art-dupl -
Best forBroad-language duplicate checks in build pipelines
- Better than JPlag:
- Duplication gates
A configurable, language-agnostic duplicate checker for build pipelines.
- Duplication gates
- Near-duplicate detection
6.6/10★★★☆☆Visit Simian -
Best forResearchers needing configurable clone analysis
A configurable command-line tool for finding exact and near-miss code clones.
6.5/10★★★☆☆Visit NiCad -
Best forLinux users analyzing six legacy languages
A Linux-focused, open-source clone detector for six languages, with AST-based matching and GUI analysis.
- Near-duplicate detection
6.4/10★★★☆☆Visit CCFinderX -
Best forDevelopers wanting real-time editor clone diagnostics
An open-source language server for configurable, real-time duplicate-code diagnostics.
- Near-duplicate detection
6.3/10★★★☆☆View CCDetect-lsp -
Best forSimple repository duplicate checks with GitHub Actions
A focused, configurable scanner for repository duplicate checks and GitHub Actions.
6.2/10★★★☆☆Visit Duplo -
Best forFuzzy text clone checks with CI exit codes
A focused, self-hosted detector for fuzzy code clones and CI threshold checks.
6.1/10★★★☆☆Visit dcd -
Best forSchools comparing programming assignment submissions
Dolos compares programming submissions and groups similar code in visual reports.
6.0/10★★★☆☆Visit Dolos -
Best forEnterprises needing web-based clone review
A cloud clone-analysis tool for reviewing modified duplicates across versions and codebases.
- Near-duplicate detection
5.9/10★★★☆☆Visit site -
Best forWindows teams needing detailed clone reports
A Windows desktop analyzer for teams that need detailed reports on exact and near-miss clones.
- Near-duplicate detection
5.8/10★★★☆☆Visit CloneDR -
Best forSelf-hosted tree-based clone research
A self-hosted command-line tool for tree-based clone research and HTML reporting.
5.7/10★★★☆☆Visit Deckard
JPlag Alternatives: Common Questions
What is the best alternative to JPlag?
jscpd: #1 in our Code Duplication Detection Tools ranking, with an editor score of 8.8 out of 10. A self-hosted, open-source clone analyzer with broad format support and CI reporting.
Is there a free alternative to JPlag?
Yes. jscpd, PMD, Avidemux, Fallow and art-dupl have a free plan or a free tier (13 of the 15 alternatives on this page).
Why do people look for JPlag alternatives?
Focused on pairwise analysis rather than duplication gates; No CI pull-request reporting or trend visualisation; Self-hosted setup relies on community support.
Which JPlag alternative has the most supported languages?
Simian Similarity Analyzer, with 19.
How do I switch from JPlag?
Export your data from JPlag (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel JPlag.
How to Switch from JPlag
- Export your data from JPlag (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel JPlag.
JPlag vs Each Alternative
| # | Tool | Free plan | Paid from | Score |
|---|---|---|---|---|
| 6 | JPlag | Yes | Free | 6.7 |
| 1 | jscpd | Free | 8.8 | |
| 2 | PMD | Yes | Free | 8.5 |
| 3 | Avidemux | Yes | Free | 7.0 |
| 4 | Fallow | Yes | $20/seat/mo | 6.9 |
| 5 | art-dupl | Free | 6.8 | |
| 6 | Simian Similarity Analyzer | Yes | Free | 6.6 |
| 7 | NiCad | Yes | Free | 6.5 |
| 8 | CCFinderX | Yes | Free | 6.4 |
| 9 | CCDetect-lsp | Yes | Free | 6.3 |
| 10 | Duplo | Yes | Free | 6.2 |
| 11 | dcd | Yes | Free | 6.1 |
| 12 | Dolos | Yes | Free | 6.0 |
| 13 | Pattern Insight Clone Detection | 5.9 | ||
| 14 | CloneDR | No | 5.8 | |
| 15 | Deckard | Free | 5.7 |
Head-to-Head
- JPlag vs jscpd
- JPlag vs PMD
- JPlag vs Avidemux
- JPlag vs Fallow
- JPlag vs art-dupl
- JPlag vs Simian Similarity Analyzer
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update