Consider using the following tools:
- Reek: Code smell detector for Ruby
- sandi_meter: checking your Ruby code for Sandi Metz' four rules
- Bumbler: Track the load progress of your Bundler-based projects
- Pelusa: Static analysis Lint-type tool to improve your OO Ruby code
- fasterer: find some speed improvements based on fast-ruby
- debride: analyze code for potentially uncalled / dead methods
- traceroute: find unused routes and controller actions
- rails_best_practices: a code metric tool for rails projects
- and others
Consider using the following tools: