Are there any user interface prototyping tools for Eclipse?

Question

I am looking into designing new features for Eclipse-based programming tools, from the requirements/ideas perspective. To really do this quickly, I would like to sketch UI elements without having to code things -- my concern is with the concepts and ideas right now, not the possible later realization. Are there any such graphical sketching tools for Eclipse?

(on a side note, I should also note that I find Eclipse a better idea every day, in the way that you can combine partial systems from very many different sources into a single environment. It really is the future of IDEs, especially for embedded systems. It used to pretty horrible pre-Eclipse-3.0, but now it does seem to work)

Answer 1

WireframeSketcher is a tool that helps quickly create wireframes, mockups and prototypes for desktop, web and mobile applications. It comes both as a standalone version and as a plug-in for Eclipse IDEs. It has some distinctive features like storyboards, components, linking and vector PDF export. Among supported IDEs are are Aptana, Flash Builder, Zend Studio and Rational Application Developer.

_{(source: wireframesketcher.com)}

Answer 2

Incidentally, NetBeans is known for having a really good GUI editor (Matisse), but I realize that you weren't asking about NetBeans :)