Kits para Wireframes

Muito bom!!!

http://www.smashingmagazine.com/2010/02/05/50-free-ui-and-web-design-wireframing-kits-resources-and-source-files/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+SmashingMagazine+%28Smashing+Magazine%29