app-UI. app-UI is a collection of user interface components that may be helpful to web and mobile developers for creating interactive applications using HTML and JavaScript, especially those targeting mobile devices. app-UI is a continual work in progress - it was born out of the necessity to have rich & native-feeling interfaces in HTML/JS experiences, and it works great with PhoneGap applications (http://www.phonegap.com). app-UI can easily be styled/customized using CSS.