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.
Convert HTML to PDF using Webkit (QtWebKit)
HTML to PDF converter for PHP
Convert PDF to HTML without losing text or format
WebDriver for Firefox
HTML, CSS and JS framework for developing responsive websites and apps
The granddaddy of HTML tools, with support for modern standards
Simple library that provides standard Unicode emoji for all platforms
phpipam open-source IP address management
Powerful rich text editor framework with a modular architecture
Tabler is free and open-source HTML Dashboard UI Kit
The next generation Javascript WYSIWYG HTML Editor
Home of the MDN live code editor interactive examples
PufferPanel is an open source game server management panel
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
Web Extension for Firefox/Chrome/MS Edge and CLI tool
The Ray Tracing in One Weekend series of books
Write email in Markdown and render them before sending
From community websites to web applications, this CSS framework
HTML to Sketch export solution
Classic modular front-end UI framework
Lighter, faster browser kernel of blink to integrate HTML UI in apps