WireframeSketcher is an Eclipse plugin for UI wireframes, mockups and prototypes. The new version brings support for storyboarding. Storyboarding is a technique that comes from the film and multimedia industries and can be used to present and describe the interactivity of user interfaces. In other words a storyboard can be used to show how the user interface responds to user actions or other events. Another useful feature in this release is the presentation viewer that can be used to show off both storyboards and individual screens in full-screen mode. Find more information on the new release here: http://wireframesketcher.com/blog/2009-05-03-storyboarding.html