Big apps on Rails


I am wondering if any of you some apps that could be considered the
biggest app on Rails.
I am making some research on the subject but I can't find much info
about it.

Diego Lapiduz

Revolution Health: ( ) is quite big size wise

Twitter ( ) is massive usage wise

Those are the first two that pop into my head.


I mean size wise.

What do you think it is "big" for the rails world? 50 controllers?
100? 100 models? more?