Browse free open source HTML/XHTML software and projects below. Use the toggles on the left to filter open source HTML/XHTML software by OS, license, language, programming language, and project status.
HTML, CSS and JS framework for developing responsive websites and apps
HTML to PDF converter for PHP
The granddaddy of HTML tools, with support for modern standards
Lighter, faster browser kernel of blink to integrate HTML UI in apps
Tabler is free and open-source HTML Dashboard UI Kit
Simple library that provides standard Unicode emoji for all platforms
Powerful rich text editor framework with a modular architecture
The next generation Javascript WYSIWYG HTML Editor
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
LaTeX.css is a library that makes your website look like a LaTeX doc
The warehouse's SpringBoot-based rights management system
Build GUI for your Python program with JavaScript, HTML, and CSS
Minimal CSS Framework for semantic HTML
Simple.css is a classless CSS template to make a good website
A JS-independent, tree-shakeable CSS framework
The static code analysis tool you need for your HTML
Java binary serialization and cloning, fast, efficient, automatic
Java library for working with real-world HTML
Status, process, and documents for ECMA-262
Juice inlines CSS stylesheets into your HTML source
The fast & forgiving HTML and XML parser