The main idea of HTML/CSS/JS UI kits is to offer you a range of production-ready web elements with a consistent style, so that you quickly kick-start any new web project. Typically standard UI packs will include buttons of different sizes and types, form field elements, navigation & pagination systems, tabs, alerts and tags. But some, like the UI packs we have for you below, will offer much, much more.
InK – Interface Kit
Included Components: Navigation, Icons, Forms, Alerts, Modals, Galleries, Tables, Tree View, Sortable Lists, Date Picker and Tabs.
Metro UI CSS
Metro UI is is a set of styles for creating an interface similar to the Windows 8 Metro UI. the framework can be used as a self-contained solution, although it can be used as an addition to any other CSS framework.
Included Components: Navigation, Tables, Forms, Accordian, List View, Buttons, Progress Bars, Carousels, Ratings, Icons, Forms, Alerts and much more.
Futurico UI HTML
Based on the Futurico GUI Elements Pack, Futurico UI is web UI kit built using the SASS preprocessor (CSS version is also available). The stylesheets have been neatly structured so that you can add, remove or edit components (called modules) easily.
Included Components: Navigation, Form Elements, Calendar, Buttons, Carousel and much more.
Gumby Framework UI Kit
Gumby 960 is an all-round responsive CSS grid framework, but does come packaged with tons of styles and common interface elements to help you quickly put together functional prototypes.
Included Components: Navigation, Form Elements, Buttons, Tabs, Toggles, Drawers and much more.
BootMetro – Windows 8 MetroUI style
Included Components: Navigation, List Views, Charms, Messages, Font Icons, Breadcrumbs, Pagination, Buttons, Progress Bars and much more.
jQuery-jKit – jQuery Based UI Toolkit
jQuery-jKit is a lightweight cross platform, jQuery based UI toolkit with a huge selection of components. It is perhaps not suited for novices, but if you are a CSS & JS ninja, then this UI kit is for you.
Included Components: EVERYTHING!!!
CSS3 Alumina UI
CSS3 Alumina UI is a complete set of UI elements that support all major types of inputs, supporting normal, hover, active, focused and disabled states for all. This is webkit only, other browsers don't provide the hooks required for these kind of styles.
Smaller UI Kits
PSD/HTML Web UI Elements Kit
Light UI Kit
CSS3 UI Kit
Coconut UI CSS
Lion CSS UI Kit
Retina UI Set
CSS Windows 8 Metro Buttons