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.
WebDriver for Firefox
Convert HTML to PDF using Webkit (QtWebKit)
HTML, CSS and JS framework for developing responsive websites and apps
HTML to PDF converter for PHP
phpipam open-source IP address management
Web Extension for saving a copy of complete web page in a single file
The granddaddy of HTML tools, with support for modern standards
Tabler is free and open-source HTML Dashboard UI Kit
Lighter, faster browser kernel of blink to integrate HTML UI in apps
Convert PDF to HTML without losing text or format
Simple library that provides standard Unicode emoji for all platforms
XSS sanitizer for HTML, MathML and SVG
PufferPanel is an open source game server management panel
Powerful rich text editor framework with a modular architecture
An extensible Markdown Editor, Viewer and Weblog Publisher for Windows
Build GUI for your Python program with JavaScript, HTML, and CSS
HTML Inspector is a code quality tool
A Fast & Light Virtual DOM Alternative
Open Source HTML5 Web Audio Library
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
Simple.css is a classless CSS template to make a good website
Userscript designed to expand the functionality of YouTube
The next generation Javascript WYSIWYG HTML Editor