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
The granddaddy of HTML tools, with support for modern standards
A patched version of discord, with bot login support
HTML to PDF converter for PHP
Create QR Codes in PHP
Powerful rich text editor framework with a modular architecture
Convert PDF to HTML without losing text or format
The next generation Javascript WYSIWYG HTML Editor
phpipam open-source IP address management
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
Web Extension for Firefox/Chrome/MS Edge and CLI tool
Convert HTML to PDF using Webkit (QtWebKit)
Userscript designed to expand the functionality of YouTube
XSS sanitizer for HTML, MathML and SVG
Simple library that provides standard Unicode emoji for all platforms
HTML, CSS and JS framework for developing responsive websites and apps
A native HTML4 / HTML5 Remote Desktop Protocol and SSH client
Personal portfolio for researchers, developers, and analysts
Status, process, and documents for ECMA-262
The Ray Tracing in One Weekend series of books
The last Markdown editor, ever
AdminKit is a free & open-source HTML dashboard & admin template