webmatrix looks almost exactly like visual stdio, but has some important subtractions...
Firstly there is the lack of 'nitellisense' that thing that fills in what you are typing before you type it.
the other important difference is that visual studio.NET includes VB
compiler, C compiler java# tools and various other things.
it also includes a new and updated packageand deployment wizard that allows you to create MSI files to install programs.
theextensibility projects allow you to write toolbar addins for many windows apps