"Alloy is a UI metaframework that provides a consistent and simple API for building web applications across all three levels of the browser: structure, style and behavior.
HTML
HTML5
Reusable markup patterns
Modular
CSS
CSS3
Built upon progressive enhancement
Framework for layout, forms and state interaction
JavaScript
Built on top of YUI3
Small core file size (9kb)
AutoComplete, Dialogs, Panels, Tabs, TreeView & more"