Thomas Koch's List: GUI Prototyping

web-based mockup tool - free

www.mockflow.com - Preview

mockup prototype programming web design ui on 2009-10-19 and saved by 34 people

The presentation mode allows to displays mockups in a full-screen mode. The presentation can be launched using F5 keyboard shortcut. While in presentation mode, keyboard shortcuts like Arrows, Space, Backspace, Page Up and Page Down can be used to navigate between screens.

wireframesketcher.com/...help.html - Preview

mockup design wireframe on 2009-10-19

c2.com/...wiki - Preview

design usability tools Prototyping mockup on 2009-10-19 and saved by 17 people

mockup editor - desktop version und adobe air online demo

www.balsamiq.com/mockups - Preview

tools mockup prototyping on 2009-10-19 and saved by 143 people