Mypal

Mypal is a web browser designed for Windows XP that is based on the Pale Moon code base. It supports many modern features on the Internet and is one of the most recommended ways to browse the internet on Windows XP.

It shows YouTube videos on old computers very well.


 * Github page
 * MajorGeeks mirror
 * Mypal-Browser.org

I would recommend the following plugins:
 * https://github.com/JustOff/github-wc-polyfill/releases for making advanced scripts on github work
 * https://github.com/gorhill/uBlock-for-firefox-legacy/releases just a good customizable adblocker