Mobile developers, this site is tailor-made for you. If you have an idea for any app and you want to test it out by building a fully-working prototype first, then here you will be able to do it with a minimum of fuss. Mokk.me is a site that makes for prototyping anything you have in mind, and then sharing these mockups you have created with just anybody – developers you work directly with, colleagues that you want to ask for an honest opinion, people whose feedback is always accurate and valuable… You can have your prototypes shared with just anybody, anytime. And you will be able to have anything you have created tested across multiple platforms at once – iPhone, Android and webOS are all supported to the fullest extent.
When it comes to the actual creation of apps, now, you are allowed to edit everything using a drag and drop interface. And you are enabled to use and reuse HTML, UI CSS and JS, as well as adding behavior with jQuery to what you are testing in order to improve your app more definitively.
Mokk.me In Their Own Words
Easily create mobile web app mocks you can share, test on multiple platforms, and use in production.
Why Mokk.me It Might Be A Killer
Because it makes for creating fully-working prototypes that can be tested cross-platform.
Some Questions About Mokk.me
When is the site moving out of beta? What will have changed by then? 
