r3dfox is a release branch of Firefox made to work on Windows Vista, 7, and 8. Also with limited compatibility for Windows XP using a One Core API.
Web Page: https://github.com/Eclipse-Community/r3dfox/
Main download: https://github.com/Eclipse-Community/r3dfox/releases
Alternative download: https://sourceforge.net/projects/r3dfox/files/
If you run into any bugs or issues, please report it on GitHub under the issues tab. I am more likely to get to it and remember to fix it if it’s there. If you don’t have a GitHub account, here is fine too.
[Moderator edit] added link to main page