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 L.

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?

Thanks! seems to be getting quite popular (millions of users I
believe, though that includes Facebook API users).