Code Metrics

RuboCop is a Ruby code style checking and code formatting tool. It aims to enforce the community-driven Ruby Style Guide.

Code coverage for Ruby with a powerful configuration library and automatic merging of coverage across test suites

A Ruby implementation of the Coveralls API.

a code metric tool for rails codes, written in Ruby.

Reek is a tool that examines Ruby classes, modules and methods and reports any code smells it finds.

RubyCritic is a tool that wraps around various static analysis gems to provide a quality report of your Ruby code.