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Reek is an open-source static analysis tool that detects code smells in Ruby applications. It is aimed at Ruby developers and teams that want configurable design-quality checks from the command line or CI.
💡 Pick it for broader Ruby linting, formatting, and metrics checks with strong ecosystem support.
A Ruby static code analyzer and formatter based on the community Ruby style guide.
RubyCritic contributors
💡 Pick it when you want visual, project-wide Ruby quality reports instead of Reek's focused smell output.
RubyCritic analyzes Ruby projects and generates visual reports about code quality, complexity, duplication, and smells. It combines several Ruby analysis tools into...
RuboCop and Flog contributors
💡 Pick it when complexity scoring and hotspot discovery matter more than a broad catalog of Ruby smells.
Flog is an open-source Ruby code complexity analyzer that assigns scores based on operations and structural complexity. It is intended for developers...
Flay contributors
💡 Pick it when duplicated Ruby logic is your main maintainability problem.
Flay is an open-source Ruby tool that detects structural similarities in code, including duplicated or near-duplicated syntax. It is aimed at developers...
💡 Pick it when you need customizable Ruby analysis plus security checks across multiple programming languages.
Semgrep is an application security platform centered on static analysis, software composition analysis, and secrets detection. It serves development and security teams...
Freemium, paid plans vary by team size
💡 Pick it for centralized dashboards, quality gates, and multi-language governance across larger engineering teams.
SonarQube is an open-source platform for continuous inspection of code quality to perform automatic reviews with static analysis of code to detect...
Free and paid plans available
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