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.
HTML to PDF converter for PHP
WebDriver for Firefox
Convert HTML to PDF using Webkit (QtWebKit)
Convert PDF to HTML without losing text or format
Powerful rich text editor framework with a modular architecture
phpipam open-source IP address management
HTML, CSS and JS framework for developing responsive websites and apps
The granddaddy of HTML tools, with support for modern standards
The next generation Javascript WYSIWYG HTML Editor
Free Introduction to Bash Scripting eBook
Open Source UI Kit built on top of Bootstrap 5 and plain JavaScript
Tabler is free and open-source HTML Dashboard UI Kit
Simple library that provides standard Unicode emoji for all platforms
Web Extension for Firefox/Chrome/MS Edge and CLI tool
An extensible Markdown Editor, Viewer and Weblog Publisher for Windows
A JS-independent, tree-shakeable CSS framework
Enable use of HTML5 sectioning elements in legacy Internet Explorer
XSS sanitizer for HTML, MathML and SVG
An HTML to Markdown converter written in JavaScript
Userscript designed to expand the functionality of YouTube