DHTMLX Touch UI Designer
DHTMLX Touch Visual Designer offers an easy and intuitive way to build web interfaces for your mobile apps. Just drag-and-drop the needed components into the Visual Designer and then set up their properties through a user-friendly interface.
Try it now (use Chrome, Safari, or FireFox 3.6 and above) or watch the video to see how it works (video shows the alpha version, which offered much less possibilities, but you'll get the idea). We've been updating the Visual Designer to make it a really nice companion tool for the DHTMLX Touch framework.