Reek

github.com · checked 11 Oct 2026

#4 · Ruby Static Analysis Tools #8 · Linters

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How it plugs in

—Public API

NoOpen source

YesFree tier

Signal on Ruby Static Analysis Tools6.3#4 of 21

Reek examines Ruby classes, modules, and methods and reports code smells.

Pricing

ReekRuby code smell detection · install via RubyGemsFree

As github.com lists them, checked 11 Oct 2026.

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Facts

Website: github.com
Price: Free tier
Free trial: No
Code checks: Its detectors include checks for issues such as Feature Envy, Large Class, Long Parameter List, Too Many Statements, and Uncommunicative Name.
Configuration: Reek supports a `.reek.yml` configuration file and permits smell warnings to be suppressed with source code comments.
Detection: Reek includes checks for code smells such as Feature Envy, Large Class, Long Parameter List, Too Many Statements, and Unused Parameters.
Detector defaults: The README says the controversial Unused Private Method detector is disabled by default and must be explicitly enabled.
Editor integrations: The README lists integrations for Vim, TextMate, Atom, SublimeLinter, VS Code, and Emacs.
Founded: 2009
Input: Reek can inspect directories or source files and can also accept Ruby code through standard input.
Installation: The README says to install Reek with RubyGems using `gem install reek`.
Integrations: The README lists editor integrations for Vim, TextMate, Atom, SublimeLinter, VS Code, and Emacs.
License: GitHub identifies the repository license as MIT.
Notable limit: Reek says it cannot provide generic fixes for reported smells because fixes depend on domain language and business logic.
Notable limits: The README says Reek identifies high-level code smells but cannot give generic fixes because fixes depend on domain language and business logic.

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