Rubydeps is a tool that uses graphviz to show a dependency graph of your project classes based on its tests. I think this is more useful than static analysis of the code base because of the high dynamic aspects of the language.

The main changes in this version are: - Support for Ruby 1.9.x (no longer supports 1.8) - Let’s you dump test runs to a file so you don’t need to start all over again just to change some filters

gem install rubydeps --pre