Online GUI design tool [closed]

Question

Is there somewhere a web based app in which you can make a mockup for program UI? It doesn't have to export to anything meaningful, but it can't hurt. Need to present several UI designs (as much as I can come up with) to a customer, but couldn't find any tool on the web.

Answer 1

I use balsamiq mockups:

http://www.balsamiq.com/products/mockups

Really nice and free...

You really can make nice looking to be apps with this and it is cartoonish but very slick. Check out how the google, youtube, and the big boy sample apps here: http://www.balsamiq.com/products/mockups/examples#boogle

If you want to share your designs you can look at mocking bird: http://gomockingbird.com/ But to be quite honest I think you will love using balsamiq for putting together something on the fly to show to other co-workers / clients.

If you want something free and built into say firefox try pencil