Awesome JavaScript Autocomplete Select Input Example – MultiSelect2
MultiSelect2 is an autocomplete and multiple select written in pure javascript.
Awesome Vanilla JavaScript Autocomplete Select Input Example – Choices
Choices is a vanilla, lightweight (~19kb gzipped), configurable select box/text input plugin.
Awesome JavaScript Autosuggest and Autocomplete Dropdown Input Example – AutoCompleTree
AutoCompleTree is a pure JavaScript autosuggest widget lets you select child nodes of JSON data.
Awesome jQuery Single and Multiple Select Box Example – Select2
Select2 is a jQuery based replacement for select boxes. It supports searching, remote data sets, and infinite scrolling of results.