Add search box to the dropdown list.(Firefox 3.0.* and 3.5.*)
Display the drop-down menu instead of the panel of the thumbnails of tab.(Minefield 3.6a1pre)
1.The list of tab is displayed by left-click the button.
2.The list of brouser-window is displayed by right-click the button.
3.The panel of tab is displayed by middle-click the button.
4.The context menu of the tab is displayed by the right-click of the menu item.
5. Search the label of the tab by inputting a letter into text box.
6. Select a tab with mouse wheel on the menu.
7. Migemo search is available if installed XUL/Migemo extension.
8. Keyboard shortcut: Ctrl+Alt+t: List all Tabs, Ctrl+Alt+Shift+t: List all Windows.
I recommended https://addons.mozilla.org/en-US/firefox/addon/pano/
Please use an extension called KeyConfig if you want to change the keyboard shortcut.