Sqetch is an Illustrator Wireframe Toolkit, consisting of several templates and elements: Browsers, iPad, Smartphone, GUI Elements and Form Elements. Download of sqetch is free and you are allowed to use the toolkit in commercial projects.
For maximum flexibility everything was created with vectors, no bitmap in sight. Every element can be scaled without loss of quality, every single stroke can be edited separately, to adapt the look of a sketch as ever you like. Colors are in CMYK for easy printing. And if you are a CS5 user you will be pleased to find out that all symbols are attached to a 9-slice scaling grid.
License: License Free