On this site you are going to find a prototyping tool for the design and validation of web and mobile applications. This tool works entirely on the browser – you are not required to download anything in order to test any concept that you might have. And you are not required to be conversant in programming, either. You can get your wireframe prototype ready without having to input a single line of code, and test everything right away.
You will be able to simulate the real behavior of any person who comes across your user interface, and the fact that testers are allowed to comment on your wireframes via an annotating tool gives everything even more practicality.
Ultimately, a tool like this one is your best bet when it comes to saving you the time (and the expenses) of these dreaded last minute changes that every designer has to put up with. You are ensuring that you are building something usable, and something that will meet the expectations of your clients the first time around.
JustInMind.com In Their Own Words
The ultimate wireframe software to create a website wireframe.
Why JustInMind.com It Might Be A Killer
It is a time-effective way to test any design you have been commissioned to create before submitting it for good to your client.
Some Questions About JustInMind.com
What other uses can this be put to? 
