jQuery UI Highlight Effect

Highlights the background of an element in a defined color for a custom duration.

jQuery UI Selectable

Allows groups of elements to be selected with the mouse.

jQuery UI Accordion

Displays collapsible content panels for presenting information in a limited amount of space.

jQuery UI Spinner

Displays buttons to easily input numbers via the keyboard or mouse.

jQuery UI Pulsate Effect

Pulsates an element n times by changing the opacity to zero and back.

jQuery UI Slider

Displays a flexible slider with ranges and accessibility via keyboard.

jQuery UI Autocomplete

Lists suggested words as the user is typing.

jQuery UI Widget

Provides a factory for creating stateful widgets with a common API.

jQuery UI Selectmenu

Duplicates and extends the functionality of a native HTML select element, allowing it to be customizable in behavior and appearance far beyond the limitations of a native select.

Fine Uploader

Multiple file upload library with support for all major browsers. Many features such as drag & drop, auto & manual retry, file chunking, auto-resume, and more! Does NOT use Flash or Java. Highly configurable. A no-dependency version is ALSO available in the downloads section.