Ruby source code analyzer (something like pylint)

Question

Does Ruby have any tools along the lines of pylint for analyzing source code for errors and simple coding standards?

It would be nice if it could be integrated with

Answer 1

I just released Excellent which implements several checks on Ruby code. It combines roodi, reek and flog and also adds some Rails specific checks:

gem sources -a http://gems.github.com
sudo gem install simplabs-excellent

May be helpful...