Plugins - Streamlined
Add to favoritesStreamlined brings the declarative goodness of ActiveRecord to the view layer. Some have called it “Scaffolding on steroids”. We call it “instant-on applications”.
http://streamlinedframework.org
http://svn.streamlinedframework.org/branches/stable/streamlined/
Rails' (MIT)
View Extensions
Take a look at auto_admin as well if you are looking for an admin-tool a-la Django's. Last time I tried Streamlined was like half a year ago... it had some rough edges but generally it was very good, I bet it is much better now.