To try the thousands of add-ons available here, download Mozilla Firefox, a fast, free way to surf the Web!
CloseWelcome to Firefox Add-ons.
Choose from thousands of extra features and styles to make Firefox your own.
CloseReview for Fast Close Tabs by wet blanket
Rated 3 out of 5 stars
Now I can't use the upper-right "X" to close the application any more. Sure, there are other ways to do this (e.g., Alt-F4 or the Exit Button add-on), but it requires a change in habit, which is annoying -- and apparently annoyance is what drove the development of this add-on to start with.
Personally, I like how Tab Mix Plus implements tab-closing for Firefox: a "close" button is available on the right edge of the window, near the top, and the original window-closing "X" is unaffected. Perhaps this doesn't solve the author's annoyance at having to precision-locate a button to close a tab, but I think it works well since this button stays in one place instead of being associated with each individual tab.
Anyway, I'm keeping this add-on because Thunderbird's native behavior was driving me nuts, and this isn't so bad, especially with Exit Button installed (then again, it'd be even better if I only needed to install one add-on instead of two). Or maybe I just want the option to open messages in new windows instead of tabs (can we? I haven't figured that out yet).
To create your own collections, you must have a Mozilla Add-ons account.