jscpd vs semdup

jscpd9.4Visit Ssemdup8.4Visit

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

vs

S semdup #8 in Code Clone Detection Tools 8.4/10 Open source ✓ 2 of 3 features Visit semdup

• jscpd fits best

  Broad, CI-driven multi-format clone detection

• semdup fits best

  Semantic duplicate detection with local inference

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Side by side

Feature	jscpd 9.4/10 Visit ↗	Ssemdup 8.4/10 Visit ↗
At a glance
Editor score	9.4	8.4
Ranking	#1 in Code Clone Detection Tools	#8 in Code Clone Detection Tools
Best for	Broad, CI-driven multi-format clone detection	Semantic duplicate detection with local inference
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
Integrations	3 integrations	2 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business
Features jscpd 2/3 · semdup 2/3
CI integration	✓	✓
IDE integration	Not checked yet	Not checked yet
Self-hosted option	✓	✓
Specs
Clone detection method	Token	Semantic
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	Finds semantic duplicates beyond token-level similarity Supports local CPU or CUDA inference with ONNX Automates repository scans through GitHub Actions
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	Self-hosted installation adds deployment responsibility Amazon Bedrock embeddings may incur separate AWS charges Language support is limited to the listed programming languages
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 →	semdup is an open-source command-line tool for identifying near-duplicate source code by comparing semantic meaning rather than token sequences. It indexes functions or code blocks, stores embeddings locally, and reports duplicate clusters… 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

• semdup — where it wins

  • Finds semantic duplicates beyond token-level similarity
  • Supports local CPU or CUDA inference with ONNX
  • Automates repository scans through GitHub Actions

  Where it doesn't

  • Self-hosted installation adds deployment responsibility
  • Amazon Bedrock embeddings may incur separate AWS charges
  • Language support is limited to the listed programming languages

• jscpd9.4/10 · Open source

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

  Visit jscpdFull verdict →
• Ssemdup8.4/10 · Open source

  A self-hosted semantic clone detector with repository diff and CI support.

  Visit semdupFull verdict →