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 Clone Detection Tools

art-dupl vs @kongyo2/similarity-ts

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score art-dupl #2 in Code Clone Detection Tools 9.2/10 Open source ✓ 2 of 3 features Visit art-dupl
@kongyo2/similarity-ts #6 in Code Clone Detection Tools 8.6/10 Free plan Free plan✓ 2 of 3 features Visit kongyo2

art-dupl leads on 0 checks, @kongyo2/similarity-ts on 0, and 4 are even. Who comes out ahead on the 4 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 · 9.2/10
  • Free planonly @kongyo2/similarity-ts

art-dupl scores higher on our rubric for code clone detection tools: 9.2 against 8.6 out of 10; our editors rank them #2 and #6.

art-dupl is the better fit for go teams needing deep CI clone analysis. @kongyo2/similarity-ts is the better fit for typeScript repositories needing CI clone gates.

  • art-dupl fits best

    Go teams needing deep CI clone analysis

  • @kongyo2/similarity-ts fits best

    TypeScript repositories needing CI clone gates

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 9.2/10 Visit ↗ @kongyo2/similarity-ts 8.6/10 Visit ↗
At a glance
Editor score 9.2 8.6
Ranking #2 in Code Clone Detection Tools #6 in Code Clone Detection Tools
Best for Go teams needing deep CI clone analysis TypeScript repositories needing CI clone gates
Pricing model Free Free
Starting price Open source Free plan
Free plan Not checked yet ✓ (best)
Free trial — —
Deployment Self-hosted Self-hosted
Support Docs, Community Docs
Built for Small business, Mid-market, Enterprise Solo, Small business
Features art-dupl 2/3 · @kongyo2/similarity-ts 2/3
CI integration ✓ ✓
IDE integration Not checked yet —
Self-hosted option ✓ ✓
Specs
Clone detection method Ast Ast
Scan scope Repository Repository
Supported languages Not checked yet Not checked yet
Our review
Pros
  • AST-based semantic, exact, and structural clone detection
  • Generated-code filtering, baselines, and CI checks
  • GitHub integrations plus a programmatic Go SDK
  • AST scoring compares functions, types, and classes structurally
  • Thresholds, exclusions, and scan-scope rules support tailored checks
  • JSON output and CI failure gating fit automated quality workflows
Cons
  • Source analysis is focused on Go and Templ projects
  • Self-hosted operation puts environment management on the team
  • CLI and SDK workflows may be more than small projects need
  • Focused on TypeScript and related file extensions
  • No IDE integration is specified
  • Self-hosted CLI workflows require local setup and maintenance
Our verdict

art-dupl is an open-source command-line tool for detecting duplicated code in Go and Templ projects. It analyzes repositories through AST-based structural detection and supports semantic, exact, structural, suffix-tree, and hash-based…

Read the review →

@kongyo2/similarity-ts is an open-source TypeScript code-similarity CLI and library for finding duplicate or structurally similar code. It is aimed at teams maintaining TypeScript repositories, especially those that want clone detection as…

Read the review →
  1. art-duplCode Clone Detection Tools 9.2Open source
  2. @kongyo2/similarity-tsCode Clone Detection Tools 8.6Free plan

Strengths and trade-offs

  • art-dupl — where it wins

    • AST-based semantic, exact, and structural clone detection
    • Generated-code filtering, baselines, and CI checks
    • GitHub integrations plus a programmatic Go SDK

    Where it doesn't

    • Source analysis is focused on Go and Templ projects
    • Self-hosted operation puts environment management on the team
    • CLI and SDK workflows may be more than small projects need

  • @kongyo2/similarity-ts — where it wins

    • AST scoring compares functions, types, and classes structurally
    • Thresholds, exclusions, and scan-scope rules support tailored checks
    • JSON output and CI failure gating fit automated quality workflows

    Where it doesn't

    • Focused on TypeScript and related file extensions
    • No IDE integration is specified
    • Self-hosted CLI workflows require local setup and maintenance

More comparisons

All code clone detection tools comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update