Suggestions appear as you type. Use the up and down arrows to choose one and Enter to open it.

This page's audience our own tag's counts — open to see them
–Visits
–Page views
–Clicks to vendors
–Time on page
–Reading now
Clicks to vendors, by tool
  • –
Top countries
  • –
Devices
  • –

– · visits, page views and clicks counted by our own tag, which counts more than our checked analytics; every figure rounded down · how we count

Head-to-head · Code Duplication Detection Tools

art-dupl vs Simian Similarity Analyzer

  • Updated Oct 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score art-dupl #5 in Code Duplication Detection Tools 6.8/10 Open source ✓ 1 of 4 features Visit art-dupl
Simian Similarity Analyzer #7 in Code Duplication Detection Tools 6.6/10 Open source Free plan✓ 3 of 4 features Visit Simian

art-dupl leads on 0 checks, Simian Similarity Analyzer on 0, and 5 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreart-dupl · 6.8/10
  • Free planonly Simian Similarity Analyzer
  • Most featuresSimian Similarity Analyzer · 3 of 4

art-dupl scores higher on our rubric for code duplication detection tools: 6.8 against 6.6 out of 10; our editors rank them #5 and #7.

art-dupl is the better fit for go teams wanting AST-based CI checks. Simian Similarity Analyzer is the better fit for broad-language duplicate checks in build pipelines.

  • art-dupl fits best

    Go teams wanting AST-based CI checks

  • Simian Similarity Analyzer fits best

    Broad-language duplicate checks in build pipelines

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.

Side by side

Feature art-dupl 6.8/10 Visit ↗ Simian Similarity Analyzer 6.6/10 Visit ↗
At a glance
Editor score 6.8 6.6
Ranking #5 in Code Duplication Detection Tools #7 in Code Duplication Detection Tools
Best for Go teams wanting AST-based CI checks Broad-language duplicate checks in build pipelines
Pricing model Free Free
Starting price Open source Open source
Free plan Not checked yet ✓ (best)
Free trial — —
Deployment Self-hosted Self-hosted
Support Docs, Community Email, Community, Docs
Integrations 3 integrations 1 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features art-dupl 1/4 · Simian Similarity Analyzer 3/4
Near-duplicate detection Not checked yet ✓ (best)
Duplication gates Not checked yet ✓ (best)
Trend visualisation Not checked yet —
Open-source option ✓ ✓
Specs
Supported languages Not checked yet 19
CI/PR reporting Not checked yet Ci
Our review
Pros
  • Semantic, exact, and structural matching for clone detection
  • Baselines flag newly introduced clones in CI
  • Reports include SARIF, metrics, and health grades
  • Supports 19 languages and near-duplicate matching
  • Configurable thresholds plus include and exclude file filters
  • Gradle and build-pipeline integration with duplication failure gates
Cons
  • Source analysis is limited to Go and Templ
  • Deployment is self-hosted rather than managed
  • Support is through documentation and community
  • Command-line workflow may not suit teams seeking a visual interface
  • No trend visualisation is provided
  • Self-hosted deployment requires teams to manage the runtime
Our verdict

art-dupl is an open-source command-line tool for finding duplicated code in Go and Templ projects. It suits developers and teams that want repository scans on their own machines or automated checks in CI/CD. Its AST-based approach compares…

Read the review →

Simian Similarity Analyzer is an open-source, language-agnostic command-line tool for finding duplicated blocks in source code and other human-readable files. It is aimed at teams that need duplicate checks across large codebases, from…

Read the review →
  1. art-duplCode Duplication Detection Tools 6.8Open source
  2. Simian Similarity AnalyzerCode Duplication Detection Tools 6.6Open source

Strengths and trade-offs

  • art-dupl — where it wins

    • Semantic, exact, and structural matching for clone detection
    • Baselines flag newly introduced clones in CI
    • Reports include SARIF, metrics, and health grades

    Where it doesn't

    • Source analysis is limited to Go and Templ
    • Deployment is self-hosted rather than managed
    • Support is through documentation and community

  • Simian Similarity Analyzer — where it wins

    • Supports 19 languages and near-duplicate matching
    • Configurable thresholds plus include and exclude file filters
    • Gradle and build-pipeline integration with duplication failure gates

    Where it doesn't

    • Command-line workflow may not suit teams seeking a visual interface
    • No trend visualisation is provided
    • Self-hosted deployment requires teams to manage the runtime
  • art-dupl6.8/10 · Open source

    A self-hosted Go and Templ duplication checker with AST matching and CI workflows.

    Visit art-duplFull verdict →
  • Simian Similarity Analyzer6.6/10 · Open source

    A configurable, language-agnostic duplicate checker for build pipelines.

    Visit SimianFull verdict →

More comparisons

All code duplication detection tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update