[telemachos]

Maybe a fairer comparison is Sinatra? That is, Express is a lot slimmer than Rails and works via a DSL based around the HTTP verbs[1].

Another JS framework to look at is Backbone[2].

[1] http://expressjs.com/guide.html#routing

[2] http://documentcloud.github.com/backbone/

[nevinera]

That would definitely be a fairer comparison, but he was asking for 'a framework like rails'; Express is the closest.