FAQ:What Is Waterfox?
Waterfox is basically a 64-Bit version of Firefox. The Firefox source code is taken and compiled to run specifically for 64-Bit Windows computers. To make Waterfox stand out a bit more, it’s compiled with optimizations so that it will run more efficiently and faster than just compiling Firefox as a 64-Bit program.
http://waterfoxproj.sourceforge.net/faq
Download:
http://sourceforge.net/projects/waterfo ... e/download
or
http://www.majorgeeks.com/Waterfox_d7283.html
Personal Notes:
I installed this just to see how it worked. I installed it and it automatically imported all my FF bookmarks and add-ons. Opened it up like I would FF and I can't tell a difference. So far I can't tell if it's any faster but I'm going to use it for a while and see if I can come to a conclusion.