Firefox Sync

Firefox Sync is a Mozilla Labs project to integrate web services into Firefox by allowing users to securely share their data with other instances of their own software, other users and 3rd parties.

Free Open Source Mac OS X Windows Linux BSD Self-Hosted Firefox

MozBackup

MozBackup is a simple utility for creating backups of Mozilla Firefox, Mozilla Thunderbird, Mozilla Sunbird, Flock, SeaMonkey, Mozilla Suite, Spicebird, Songbird and Netscape profiles.

Free Open Source Windows

FEBE

FEBE (Firefox Environment Backup Extension) allows you to quickly and easily backup your Firefox extensions. In fact, it goes beyond just backing up -- It will actually rebuild your extensions individually into installable .xpi files.

Free Mac OS X Windows Linux Firefox

hekasoft backup restore

Backup and restore your data, settings, extensions, bookmarks...etc easily from browsers or email-clients.

Free Windows

Batckup Firefox

Batckup Firefox is a small and very easy to use command line utility that will automatically backup all your Firefox profiles to your desktop.

Free Personal Windows