The granddaddy of HTML tools, with support for modern standards
sq data wrangler
WebDriver for Firefox
Various data formats for the SPDX License List
HTML Loader
The universal markup converter
HTML to PDF converter for PHP
HTML, CSS and JS framework for developing responsive websites and apps
Painless html generation
HTML to React parser
jq, but for HTML
Html menu generator
Html menu generator for Laravel
Java library for working with real-world HTML
Swift DSL for type-safe, extensible, and transformable HTML documents
Low output latency streaming HTML parser/rewriter with CSS API
Small program rich text component, supports rendering and editing html
Template generator for (responsive) emails & email signatures
AdminKit is a free & open-source HTML dashboard & admin template
The HTML5 Creation Engine, to create beautiful digital content
Status, process, and documents for ECMA-262
World's most comprehensive, powerful, process-based PDF editor
Convert HTML to Markdown with PHP
HTML to PDF or image (jpeg, png, webp) converter via Chrome/Chromium
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript