Cufon

A discontinued JavaScript library that performs text replacement on web pages, using the canvas element and VML to render fancy fonts.

Rangeslider.js

Simple jQuery polyfill for the HTML5 <input type="range"> slider element.

GraphQL.js

The JavaScript reference implementation for GraphQL, a query language for APIs created by Facebook.

Snap.svg

A JavaScript library for animating, manipulating, and generating SVG content.

i18next

An internationalization framework written in and for JavaScript.

AlertifyJS

A JavaScript framework for developing pretty browser dialogs and notifications.

Partytown

A lazy-loaded library to help relocate resource intensive scripts into a web worker, and off of the main thread.

LocalForage

An offline storage library that provides a unified API for IndexedDB, WebSQL, and localStorage.

Pikaday

A lightweight JavaScript datepicker with no dependencies.

iScroll

A high-performance JavaScript library for smooth scrolling.

Closure Library

A low-level JavaScript library designed for building complex and scalable web applications.

Barba.js

A lightweight library to make websites run like a SPA by creating smooth transitions between pages.

Critters

A deprecated Webpack plugin that inlines your app's critical CSS and lazily loads the rest.

Day.js

Fast 2kB alternative to Moment.js with the same modern API.

Turbolinks

A JavaScript library that allows web apps to behave like a single page application.

Quill

An open-source JavaScript WYSIWYG text editor designed to provide consistent content editing across browsers using a structured document model.

Grid.js

An open-source JavaScript table plugin for displaying tabular data with built-in search, sorting, and pagination features.

Howler.js

A cross-platform audio library that defaults to Web Audio API and falls back to HTML5 Audio.

Prism

A lightweight, extensible syntax highlighter designed for fast client-side code highlighting in web pages and documentation systems.

Zepto

A lightweight and modular open-source JavaScript library with a largely jQuery-compatible API, designed for modern browsers and optimized for fast execution and small file size.

flv.js

An HTML5 Flash Video Player written in pure JavaScript without Flash.

ScrollMagic

A JavaScript library for magical scroll interactions.

SWFObject

A deprecated framework for detecting the Adobe Flash Player plugin and embedding Flash files.

Ruffle

An Adobe Flash Player emulator written in the Rust programming language.

Scriptaculous

An open-source JavaScript library built on the Prototype framework that provides visual effects, user interface controls, and AJAX utilities for web applications.