There's a framework that does that, yeah it's pretty old but not obsolete. I saw it when I there used to exist Delphi for PHP. Check out the Qooxdoo framework,

There's a framework that does that, yeah it's pretty old but not obsolete. I saw it when I there used to exist Delphi for PHP. Check out the Qooxdoo framework, it allows you to create desktop-like websites, just like you would with Qt. Check out the Window demos and playground.