10 Best Autocomplete Libraries In Vanilla JavaScript (2025 Update)

If you’re looking for an autocomplete JavaScript library to enhance the select & input behaviors on web applications. You have come to the right place.

This is a hand-picked list that is updated every year and showcases the 10 best pure (vanilla) JavaScript autocomplete libraries of the year.

Feel free to download and use them in your next web app design to apply the autocomplete functionality to the existing input field or select box. Have fun with it.

Originally Published May 25 2020, updated Jan 15, 2025

1. Fast Autocomplete/Typeahead Library For Bootstrap 5

This is the upgraded version of the Bootstrap 4 Autocomplete plugin that enables a blazing fast autocomplete/typeahead functionality on Bootstrap 5 inputs.

[Demo] [Download]

2. Advanced Feature-rich Autocomplete JavaScript Library – awesomplete

A simple yet highly customizable, user-friendly, feature-rich autocomplete library written in pure JavaScript.

[Demo] [Download]

3. Powerful Autocomplete With Asynchronous Data Fetch – autocomplete.js

A feature-rich, highly-customizable, fully accessible autocomplete library written in Vanilla JavaScript.

[Demo] [Download]

4. Fast Autocomplete & Typeahead Library – autoComplete.js

A dynamic, blazing-fast, dependency-free, and easy-to-use autocomplete & typeahead JavaScript library for modern web development.

[Demo] [Download]

5. Accessible Autocomplete Component In Vanilla JavaScript – Autocomplete

A fast, dynamic, accessible (WAI-ARIA) compliant autocomplete component written in vanilla JavaScript.

[Demo] [Download]

6. Fast Autocomplete Dropdown For Input Field – autocomplete.js

A vanilla JavaScript autocomplete library that attaches a blazing fast autocomplete dropdown list to your input field while typing.

[Demo] [Download]

7. Tiny And Fast Autocomplete JavaScript Library – Autocomp.js

A super-tiny and blazing-fast autocomplete JavaScript library for the web. It can fetch suggestions asynchronously from a local or remote data source and render them inline as the user types. Works with the native input field.

[Demo] [Download]

8. Floating Autocomplete Box For Textarea – floatype.js

A lightweight and fast JavaScript library that adds autocomplete/autosuggestion functionality to textareas. As soon as you start typing characters into a textarea, the library automatically displays a floating dropdown box next to the cursor with preset suggestions to choose from.