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
HTML, CSS and JS framework for developing responsive websites and apps
Convert HTML to PDF using Webkit (QtWebKit)
HTML to PDF converter for PHP
The granddaddy of HTML tools, with support for modern standards
Web Extension for saving a copy of complete web page in a single file
phpipam open-source IP address management
Convert PDF to HTML without losing text or format
Tabler is free and open-source HTML Dashboard UI Kit
Simple library that provides standard Unicode emoji for all platforms
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
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
XSS sanitizer for HTML, MathML and SVG
The static code analysis tool you need for your HTML
Simple.css is a classless CSS template to make a good website
Open Source HTML5 Web Audio Library
Happy DOM is a JavaScript implementation of a web browser
Low output latency streaming HTML parser/rewriter with CSS API
Minimal CSS Framework for semantic HTML
The Ray Tracing in One Weekend series of books
The warehouse's SpringBoot-based rights management system