The creation of all great products begins with the prototype, unless you’re a genius. Certain that I am not a genius, I’ve used various methods of prototyping, including pencil sketches, storyboards, wireframes, the paper browser, mockups and the infamous napkin. A good friend of mine who is starting his own venture pointed me at this list of 10 free prototyping tools. I’ve tried HotGloo and have been satisfied, but I think I’ll take some time to try out some of the others. Enjoy.