Be careful with old versions!
These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.
[+] Fixed settings window.
[+] Updated Spanish locale.
[+] Added Session Support.
[+] Fixed Extra Quick Rename (F2)
[+] Fixed Arabic locale.
[+] Added Extra Quick Rename: just press F2!
[+] Fixed Norwegian locale.
[+] Added Arabic locale.
[+] Added Chinese (Traditional) locale.
[+] Fixed: big favicons issue.
[+] Added Norwegian locale.
[+] Added: changes take effect without need of a restart.
[+] Added Dutch locale.
[+] Fixed showing original title for active tab.
[+] Added Hebrew and Russian locales.
[+] Fixed problem when closing tabs with Ctrl + F4.
[+] Settings windows redesigned.
[+] Contextual menu more customizable.
[+] Added Czech, Portuguese (Brazilian) and Swedish translations.
[+] Added German, Persian, Finnish and Chinese (Simplified) translations.
[+] Some other localization related fixes.
[+] Added Japanese, French, Portuguese (Portugal), Polish and Turkish translations.
[+] Added Korean and Dutch translations.
[+] Added: Firefox 3.0a7 support.
[+] Fixed: Support for Unicode characters in titles.
[+] Fixed: Now titles can contain "|".
Firefox 2.0rc1 compatibility update.
[+] Now the active tab can be renamed in the "auto" mode.
[+] Added a new menu entry: "Restore original titles".
[+] When renaming the active tab, title bar is renamed too.
[+] Customizable shortcut key (Ctrl+Shift+...).
[+] Added a shortcut for the Settings in the Tools Menu.
[+] Added a toolbar button.
[+] Ctrl+Shift+click on a tab to rename it.
[+] Now you can customize the titles list!
[+] Added a keyboard shortcut (Ctrl. + Shift + Z).
[+] When opening a new tab in the "auto" mode, it's automatically renamed (I hope).
And coming soon... more.
[+] Added "Rename tabs (auto)" button.