The [os](https://nodejs.org/api/os.html) module from node.js, but for browsers.
A very fast HTML parser, generating a simplified DOM, with basic element query support.
Official validator for AMP HTML (www.ampproject.org)
An elegant lib that converts the chalked (ANSI) text to HTML.
Enhances html-webpack-plugin functionality with async and defer attributes for script elements
Simplifies creation of HTML files to serve your webpack bundles
Enhances html-webpack-plugin with link rel=preload wiring capabilities for scripts
HTML templates literals in JavaScript
HTML/XML processor
Modular HTML minifier, built on top of the PostHTML
send text/html emails and attachments (files, streams and strings) from node.js to any smtp server
Streaming HTML parser with scripting support.
Implementation of the HTML encoding sniffer algo, with stream support
A [W3C HTML JSON forms spec](http://www.w3.org/TR/html-json-forms/) compliant field appender (for lack of a better name). Useful for people implementing `application/x-www-form-urlencoded` and `multipart/form-data` parsers.
A streaming parser for HTML form data for node.js
A clean, whitespace-sensitive template language for writing HTML
Forgiving HTML/XML/RSS Parser in JS for *both* Node and Browsers
HTML5 HTML parser, including support for SVG and MathML foreign content
Default code-generator for pug. It generates HTML via a JavaScript template function.
An HTML5 Web Sockets client
Render JSX to an HTML string, with support for Preact components.