Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.
Lists suggested words as the user is typing.
fast and fully-featured autocomplete library
Selectize is a jQuery-based custom UI control. Useful for tagging, contact lists, country selectors, etc.
Autocomplete provides suggestions while you type into the text field.
MagicSuggest is a multiple selection auto suggest combo box for Bootstrap 3.
jQuery plugin that turns select boxes into flex-matching incremental-finding controls.
A jQuery autocomplete plugin for the discerning developer.
A jQuery plugin that adds delight to selecting multiple values for an input.
Free or commercial plug-and-play US address verification and geocoding for website forms with autocomplete suggestions, powered by SmartyStreets.