Now the 64-bit operating systems are becoming more popular, it is the general trend, the Firefox 64-bit versions are designed specifically for these 64-bit operating systems. Different speeds, different performance, more reliable, it can bring you the better Firefox experience.
For Windows 64-bit OS
For Windows x64 OS, here are a set of release for the major Firefox 64-bit releases:
|Firefox Nightly||exe installer||Official Build||Download (recommend)|
|Firefox Nightly||zip package||Official Build||Download (recommend)|
|Waterfox||exe installer||Unofficial Build||Download|
|mozilla-x86-64||zip package||Unofficial Build||Download|
Supported operating systems: Windows 7 64-bit edition and Windows Server 2008 R2 64-bit edition.
Firefox Backup ToolIf you often update and adjust your Firefox web browser, this Firefox Backup Tool can help you, it can be easily backup all important configuration of your Firefox, including user preferences, bookmarks, extensions, browsing history, etc., you can back up all of these to one file, then restore it when you need, you can also add password protection for backup files. This is a freeware, you can download it here, it currently only supports Windows platforms (both x86 and x64 versions).
For Linux 64-bit OS
Supports a variety of popular modern Linux 64-bit operating system.
|Firefox Nightly||tar.bz2||Official Build||Download|
Add-ons and Plugins