🛠 [brakeman](https://github.com/presidentbeef/brakeman) - A static analysis security vulnerability scanner for Ruby on Rails applications

🛠 [cane](https://github.com/square/cane) - Code quality threshold checking as part of your build

🛠 [dawnscanner](https://github.com/thesp0nge/dawnscanner) - a static analysis security scanner for ruby written web applications. It supports Sinatra, Padrino and Ruby on Rails frameworks.

🛠 [flay](https://github.com/seattlerb/flay) - Flay analyzes code for structural similarities.

🛠 [flog](https://github.com/seattlerb/flog) - Flog reports the most tortured code in an easy to read pain report. The higher the score, the more pain the code is in.

🛠 [laser](https://github.com/michaeledgar/laser) - Static analysis and style linter for Ruby code.

🛠 [pelusa](https://github.com/codegram/pelusa) - Static analysis Lint-type tool to improve your OO Ruby code

🛠 [quality](https://github.com/apiology/quality) - Runs quality checks on your code using community tools, and makes sure your numbers don't get any worse over time.

🛠 [Querly](https://github.com/soutaro/querly) - Pattern Based Checking Tool for Ruby

🛠 [Railroader](https://railroader.org/) - An open source static analysis security vulnerability scanner for Ruby on Rails applications.

🛠 [reek](https://github.com/troessner/reek) - Code smell detector for Ruby

🛠 [RuboCop](https://github.com/rubocop-hq/rubocop) - A Ruby static code analyzer, based on the community Ruby style guide.

🛠 [Rubrowser](https://github.com/blazeeboy/rubrowser) - Ruby classes interactive dependency graph generator.

🛠 [ruby-lint](https://github.com/YorickPeterse/ruby-lint) - Static code analysis for Ruby

🛠 [rubycritic](https://github.com/whitesmith/rubycritic) - A Ruby code quality reporter

🛠 [SandiMeter](https://github.com/makaroni4/sandi_meter) - Static analysis tool for checking Ruby code for Sandi Metz' rules.

🛠 [Sorbet](https://github.com/sorbet/sorbet) - A fast, powerful type checker designed for Ruby