Smashing beat me to it. I’ve been working on a post of all the new design mock-up tools on the market. Last time I counted- there were at least 40. Guess I’ll finish it up and get it posted.
But in the meantime- enjoy Smashing’s post “35 Excellent Wireframing Resources“.
This sketch is from my friend Jakub Linowski’s excellent blog called Wireframes. Jakub and I will be collaborating on some upcoming projects.
One of the major sites Smashing overlooked in Konigi who has great sets of wireframe stencils, sketch books, grayscale icons sets…
Added September 17th: Adaptive Path pulled together a full list of prototyping tools- 42 in all.