I used DNN awhile back and it's not horrible. If they're a Microsoft shop and the app is working and their growth is incremental, let sleeping dogs lie. If the

I used DNN awhile back and it's not horrible. If they're a Microsoft shop and the app is working and their growth is incremental, let sleeping dogs lie. If they're bringing you in to make a clean start with the best web frameworks available, then one of the Ruby/Python/PHP frameworks others mention would be better IMHO. If the answer is somewhere in the middle, you might have a look at the Castle Project (http://www.castleproject.org/ http://www.castleproject.org/), which I've had some good results with in the past.