Sasquatch makes it incredibly simple to build your own desktop-calibre webapps. If you've ever looked at Gmail and wondered if you could build something like that... you can and Sasquatch makes it easy.
Forget about spending time learning a large, complex view hierarchy (SproutCore, I'm looking at you). You already know jQuery, right? Of course you do. Use jQuery's rich plugin ecosystem & readable HTML templates to create webapps the way you want them to work.
Jump over to the Installation section of Getting Started. We'll have you up and running on Sasquatch in less than 15 minutes.