jscpd vs QuickDup

jscpd9.4Visit QQuickDup8.5Visit

Higher score jscpd #1 in Code Clone Detection Tools 9.4/10 Open source ✓ 2 of 3 features Visit jscpd

vs

Q QuickDup #7 in Code Clone Detection Tools 8.5/10 Open source ✓ 2 of 3 features Visit QuickDup

• jscpd fits best

  Broad, CI-driven multi-format clone detection

• QuickDup fits best

  Teams reviewing clones in GitHub pull requests

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	jscpd 9.4/10 Visit ↗	QQuickDup 8.5/10 Visit ↗
At a glance
Editor score	9.4	8.5
Ranking	#1 in Code Clone Detection Tools	#7 in Code Clone Detection Tools
Best for	Broad, CI-driven multi-format clone detection	Teams reviewing clones in GitHub pull requests
Pricing model	Free	Free
Starting price	Open source	Open source
Free plan	Not checked yet	Not checked yet
Free trial	—	—
Deployment	Self-hosted	Self-hosted
Platforms	Windows, macOS, Linux	Windows, macOS, Linux
Support	Docs	Docs
Integrations	3 integrations	1 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market
Features jscpd 2/3 · QuickDup 2/3
CI integration	✓	✓
IDE integration	Not checked yet	—
Self-hosted option	✓	✓
Specs
Clone detection method	Token	Hybrid
Scan scope	Repository	Repository
Supported languages	Not checked yet	Not checked yet
Our review
Pros	Detects exact, renamed, and near-miss clones across repositories Supports 224 language and document formats Adds GitHub Actions, SARIF, history trends, and multiple reporters	Combines structural fingerprints with token-similarity scoring Adds Git diff, commit-range, caching, and threshold controls Publishes findings as GitHub Actions pull-request annotations
Cons	Primarily a command-line tool rather than a visual-first product Self-hosted operation places deployment responsibility with the team Its strongest workflow is centered on repository and CI scanning	No IDE integration Findings are candidates, not definitive semantic classifications Requires self-hosted command-line and CI setup
Our verdict	jscpd is an open-source command-line tool for detecting duplicated source-code blocks across repositories. It uses language-aware tokenization to identify exact, renamed, and near-miss clones, making it suitable for development teams that… Read the review →	QuickDup is an open-source command-line tool for detecting likely code clones in source directories or individual files. It is aimed at developers and engineering teams that review duplication across repositories, particularly teams using… Read the review →

Strengths and trade-offs

• jscpd — where it wins

  • Detects exact, renamed, and near-miss clones across repositories
  • Supports 224 language and document formats
  • Adds GitHub Actions, SARIF, history trends, and multiple reporters

  Where it doesn't

  • Primarily a command-line tool rather than a visual-first product
  • Self-hosted operation places deployment responsibility with the team
  • Its strongest workflow is centered on repository and CI scanning

• QuickDup — where it wins

  • Combines structural fingerprints with token-similarity scoring
  • Adds Git diff, commit-range, caching, and threshold controls
  • Publishes findings as GitHub Actions pull-request annotations

  Where it doesn't

  • No IDE integration
  • Findings are candidates, not definitive semantic classifications
  • Requires self-hosted command-line and CI setup

• jscpd9.4/10 · Open source

  A broad, self-hosted clone detector with strong CI, reporting, and history analysis.

  Visit jscpdFull verdict →
• QQuickDup8.5/10 · Open source

  An open-source candidate finder for reviewing likely code duplicates in pull requests.

  Visit QuickDupFull verdict →