Rated 5 out of 5 stars
Perfect addon, well thought-out, best for find tabs, filter tabs or search text in tabs.
Complement to it: switch to location bar (“Ctrl-L”), type “%”, space, search text.
Default shortcut conflicts with “Tab Utilities” and also duplicates current tab. So I've changed shortcut to “Ctrl-Shift-F”.
Feature request: please, save window size.