If you like to create a stand alone application I know that happstack was created for stand-alone applications with no database, although Yesod and Snap can do it as well. If your application is a-single-page-doit-all by using a lot of JavaScript (or Fay) , then any of these restful frameworks will work well.
In the other side, if you application has different pages and need to manage state in the server, then you may consider MFlow . It can make things easier a lot. The application flow is codified just like in a console application. It uses formlets, blaze-html and WAI-warp
you can find examples here: