Could anyone tell me if there is such thing as a GUI designer. I'm looking for something to just create the image of a guid I want to build. The idea is to just create the shapes and some images of drop boxes and maybe some other widgets so I can print it out and run it by some colleagues to see what they like. It doesn't have to generate any code or anything like that.. Just a graphical representation. Looks more professional than a ruler and pencil.
I suppose it's something like UML is to workflow designes but for GUIs.