Tab Quicksearch
Firefox extension for quick-switching through your open tabs.
Tab Quicksearch is a search-based tab switcher, much like the "quicksearch" feature of the Emacs editor.
The extension is a little popup window which, on the press of a shortcut key, opens and presents a text input field. When you start typing a part of the title of a tab, the extension will switch to the first tab that matches your input. Pressing the shortcut key again will switch to the second match, and so on, cycling through all the matches.
The current shortcut key is defined as ALT+SPACE.
Download: