New Moon - Pale Moon for XP

Maybe it's old news, but I only discovered New Moon yesterday.

I've only used it for a couple of hours, but so far so good.

Full disclosure:
Currently, it does not include any audio or video codecs. HTML5 audio and video will therefore not work. This might change in the future.

http://matejhorvat.si/en/unfiled/pmxp/index.htm

It can be installed alongside both Pale Moon and Firefox.