D3.js

An open-source, low-level JavaScript toolbox for data visualization.

Turbo

A lightweight JavaScript library that provides the speed and feel of a single-page application without requiring developers to write any JavaScript.

MathJax

An open-source JavaScript rendering engine for LaTeX, MathML, and AsciiMath notation that works in all modern browsers.

Prefix-free

A legacy script that adds browser prefixes to CSS code when needed for old browsers.

Green Popups

A commercial popup system with a drag-and-drop popup builder, 20+ popup elements, 200+ professionally designed templates, available as a WordPress plugin or standalone script.

Beasties

A plugin that inlines your app's critical CSS and lazy-loads the rest.

A lightbox module for Bootstrap that supports images, YouTube videos and galleries - built around Bootstrap's Modal plugin.

An elegant, responsive and lightweight notification plugin with no dependencies.

Socket.io

A library that enables real-time, bidirectional and event-based communication between the browser and the server.

OpenLayers

An open-source, feature-packed library for creating interactive maps on the web.

HLS.js

A JavaScript library that implements an HTTP Live Streaming client, using HTML5 video and MediaSource extensions.

Locomotive Scroll

A simple scroll library with smooth scrolling, parallax effects, toggling classes, and triggering event listeners when elements are in the viewport.

GraphQL.js

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

SignalR

A library for ASP.NET that enables real-time two-way communication between servers and clients.

Pikaday

A lightweight JavaScript datepicker with no dependencies.

PixiJS

A rendering library with WebGPU/WebGL support for creating rich, interactive graphics and cross-platform applications and games.

A scripting language that makes it easy to respond to events and perform simple DOM manipulation in code embedded directly in HTML elements.

Froala

A commercial JavaScript WYSIWYG HTML editor that enables rich text editing within web applications and content management systems.

A library that allows you to use AJAX, CSS transitions, WebSockets and Server Sent Events directly from HTML.

Marked

A fast, lightweight, low-level markdown parser and compiler.

iframe-resizer

Library resizes iframes to fit the size of the content.

Spry

A deprecated JavaScript framework by Adobe that enables the rapid development of Ajax-powered web pages.

Zepto

A lightweight and modular jQuery alternative with a largely compatible API.

Ouibounce

A small library enabling you to display a modal before a user leaves your website.

A simpler rewrite of Google's libphonenumber library in JavaScript.