SproutCore is an open-source framework for building blazingly fast, innovative user experiences on the web. SproutCore applications move business logic to the browser so they can respond to your users' taps and clicks immediately, avoiding an agonizing roundtrip across often intermittent network connections.
And that's all. It's up to you what MVC framework to choose. At least you should look for alternatives to be sure you found the right one. More MVC frameworks can be found here, on Jster. We have more then 20 MVC frameworks to choose, and even more application frameworks, if you want to go beyond MVC stack.