This page's audience our own tag's counts — open to see them

Period

–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

Simian Similarity Analyzer

Free#9 of 23 in Code Clone Detection ToolsCode Duplication Detection Tools

Simian Similarity Analyzer: A mature, configurable CLI scanner for repository-wide duplicate-code analysis. Ranked #9 of 23 in Code Clone Detection Tools by our editors (8.3/10); pricing: Open source; best for mature language-agnostic pipeline scanning.

8.3/10Editor score

Visit Simian

Simian Similarity Analyzer8.3 Visit Simian

At a glance

Editor score
8.3 / 10
Pricing
Open source
Best for
Mature language-agnostic pipeline scanning
Paid from
Free
Clone detection method
Text
Founded
2003 · Los Angeles, California, United States
Facts checked
20 Sep 2026

Where it wins
- Scans large repositories across many programming and markup languages
- Supports configurable filters, thresholds, and duplication failure behavior
- Runs locally with multiple report formats for pipelines and pre-commit checks
Where it doesn't
- Text-based detection may miss structural similarities beyond duplicated text
- No IDE integration is provided
- Java Virtual Machine execution adds a runtime dependency

Our verdict on Simian Similarity Analyzer

Simian Similarity Analyzer is an open-source, Java-based command-line tool for finding duplicated code blocks in human-readable source files. It is aimed at software engineers, source-code reviewers, and litigation teams performing code-similarity analysis. The tool uses text-based scanning across repositories and supports many programming and markup languages, including Java, C, C++, C#, COBOL, Python, Ruby, PHP, JavaScript, TypeScript, HTML, XML, CSS, and Visual Basic. It runs on Windows, macOS, Linux, and other JVM environments.

Its strongest fit is a mature pipeline-scanning workflow. Simian can run locally through the Java Virtual Machine, from scripts, in build pipelines, or as part of pre-commit checks. Configurable filtering options, thresholds, and duplication failure behavior let teams decide which findings should be reported and when duplication should affect a build. Output is available in plain text, XML, YAML, and editor-friendly formats, giving teams several ways to feed results into review or automation processes. The open-source model also suits organizations that want local execution rather than a hosted scanning service.

The main trade-off is its narrow, text-based approach and command-line orientation. Simian is designed to identify duplicated text in source files, so teams looking specifically for deeper structural or semantic clone analysis may need a different tool. It also has no IDE integration, and JVM execution adds a runtime requirement to setup and automation. Choose Simian for repository-wide duplicate detection, configurable pipeline enforcement, and broad language coverage; choose an alternative if editor-native feedback or non-textual similarity analysis is central to the workflow.

Your product? Our editors can test Simian Similarity Analyzer in depth and publish a review, labelled as paid · from $149/mo →

Simian Similarity Analyzer pricing

Plans Open sourceFree Free to use — no paid tier required for the core job.

See plans on simian.quandarypeak.com

Simian Similarity Analyzer fact sheet

Free plan	Not verified
Paid from	Free
Clone detection method	Text
Scan scope	Repository
CI integration	Yes
IDE integration	No
Self-hosted option	Yes
Supported languages	Not verified
Deployment	Self-hosted
Platforms	Windows, macOS, Linux
Support	Community
Built for	Solo, Small business, Mid-market, Enterprise (editorial estimate)
Pricing	Open source
Website	simian.quandarypeak.com
Facts checked	20 Sep 2026

Alternatives to Simian Similarity Analyzer

See all Simian Similarity Analyzer alternatives →

Also Ranked In

Simian Similarity Analyzer is ranked in 2 of our directories.

#7Code Duplication Detection Tools18 tools ranked

Used Simian Similarity Analyzer? Be the first to review it

The editor score above is our own research. What this page doesn't have yet is a reader's view — what you used Simian Similarity Analyzer for, what worked and what didn't. No stars are seeded and no review is paid for; an editor reads every one before it appears.

Write a reviewTwo minutes · verified accounts only · read by an editor before it appears

Reviews come only from verified accounts. Sign in or create an account first — your e-mail is never shown.

Title

Your review

0 characters · at least 80, up to 3,000

Pros (optional · one per line)

Cons (optional · one per line)

Your name (shown with your review)

Role (optional)

Company (optional)

How long have you used it?

I've used Simian Similarity Analyzer myself and this is my honest opinion — nobody paid or asked me to write it.

Posted from your verified account. Reviews appear after an editor reads them, usually within two working days.

Featured on iTechGuides

Simian Similarity Analyzer is listed in our Code Clone Detection Tools directory. Add the badge to your site — it links back to this page.

<a href="https://www.itechguides.com/products/simian-similarity-analyzer/"><img src="https://www.itechguides.com/best/badge/simian-similarity-analyzer.svg" alt="Featured on iTechGuides" width="230" height="46"></a>

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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.

Last updated 7 Oct 2026 · How we research and update