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 to PDF converter for PHP
phpipam open-source IP address management
HTML, CSS and JS framework for developing responsive websites and apps
XSS sanitizer for HTML, MathML and SVG
Convert HTML to PDF using Webkit (QtWebKit)
The granddaddy of HTML tools, with support for modern standards
Web Extension for saving a copy of complete web page in a single file
A static analyzer for Java, C, C++, and Objective-C
Powerful rich text editor framework with a modular architecture
A language for writing HTML user interfaces in Go
Convert PDF to HTML without losing text or format
Free Introduction to Bash Scripting eBook
Publii is a desktop-based CMS for Windows, Mac and Linux
The next generation Javascript WYSIWYG HTML Editor
Converts CSS selectors to XPath expressions
An extensible Markdown Editor, Viewer and Weblog Publisher for Windows
Simple library that provides standard Unicode emoji for all platforms
Userscript designed to expand the functionality of YouTube
Tabler is free and open-source HTML Dashboard UI Kit
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
Happy DOM is a JavaScript implementation of a web browser