One of the comments linked me to something I've been looking for for AGES yet couldn't find.
The Pale Moon Project/
It's a browser fork from firefox that not only has a stable 64 bit edition, there's a tool that'll port all of your settings/plugins/bookmarks/menubars/etc over from firefox.
This could make my life at work amazing because I'll no longer be limited to 2gb of usable RAM for my browser due to firefox being 32 bit. (2gb for OS, 2gb shared for all 32 bit apps, 4 whole gigs of ram unused by anything that's not a proper 64 bit app)
Considering how I regularly keep 2-4 firefox windows open with 1-45 tabs open in each one (increasing as the week goes on) this might save my bacon, productivity-wise.