Flexbeta FireTweaker XP has reached Final Release and is ready for download. FireTweaker XP is a tweaking and optimizing software for Mozilla Firefox. FireTweaker XP bundles more than 20 different tweaks to optimize or customize Mozilla Firefox. FireTweaker XP does not contain any spyware or adware, it is 100% clean for your tweaking pleasures. FireTweaker XP currently supports Windows 98/Me, 2000, XP and 2003.
Changes:

A new Rollback engine rewritten from the ground up.
Firetweaker now makes backup of your original Firefox settings and restores them after a Rollback is performed.
Debugging Information has been removed, so Firetweaker runs much faster now.
Weblinks from within the program now open in Internet Explorer due to a small bug in Firefox which prevented firetweaker from doing so in previous builds.
Firetweaker now works on all Localized versions of Windows.
Flexbeta FireTweaker XP 1.0 Direct Link