If you like me work with application development, you know how difficult is sometimes to produce screen mockups to show to your customers. I’ve used to do that using pencil and paper but today I’ve run into Balsamiq Mockups which is a application developed in Flash specially for design screen mockups. It works on Windows, Linux and Mac OS.
You can take a look how easy is to produce mockups watching the video below:
Balsamiq has a lot of components available: Labels, Textbox, Combos, Buttons, List, etc.
Another interesting feature is you can export the screen mockup as PNG.
Balsamiq is not free. You can try it online, but I think it’s tool which values each cent.