A potential life saver and an absolute must-have! Rated 5 out of 5 stars

Thank god I found this extension years ago, and I've been using it happily ever since. Firefox's multiple tab close prevention is very buggy, thank god this extension ensures some reliability.

Developer: PLEASE update the extension to support private tabs! I'm willing to pay for this addition!

works, should be built-in Rated 4 out of 5 stars

Sadly Mozilla hasn't fixed bugs 550559 (Decouple Session Restore from Quit warning, warn when using keyboard shortcut on Mac & Linux) and 565567 (FF should ask for confirmation before quitting with Cmd-Q) despite all the votes. I found this and installed it before finding the other add-on warn-before-quit. This shows a simple alert whereas warn-before-quit draws its own transient dialog. It works for me with Firefox 41 on Linux. But it hasn't been updated for a while and requires a browser restart.

This review is for a previous version of the add-on (2.1.1-signed). 

Rated 2 out of 5 stars

On Firefox 31.0 on 64 bit Windows 8, this addon only works when there is only one tab left open in a session, but fails to work when there are multiple tabs open, and Alt-F4 is pressed.

Linkback to bugzilla report linking here: https://bugzilla.mozilla.org/show_bug.cgi?id=419009#c142

This review is for a previous version of the add-on (2.1.1-signed). 

Rated 1 out of 5 stars

Did not work for Firefox 28.0 on Ubuntu 13.10. After installing, there is still no dialog when hitting CTRL-Q.

This review is for a previous version of the add-on (2.1.1-signed). 

Rated 5 out of 5 stars

few too many times i have reached for ctrl+w and accidentally hit ctrl+q. While firefox should have an optional prompt built in this add-on does the trick nicely. thanks!

This review is for a previous version of the add-on (2.1.1-signed). 

Great! Rated 5 out of 5 stars

This is fantastic for those of use waiting for this FF bug/feature to be addressed: https://bugzilla.mozilla.org/show_bug.cgi?id=550559
It's simple and does just what it says.

This review is for a previous version of the add-on (2.1.1-signed). 

Works well as advertised Rated 5 out of 5 stars

Pity it is not an inbuilt feature.
I tested this addon to work on my Firefox Aurora 26.0a2 on OS X 10.8.5

This review is for a previous version of the add-on (2.1.1-signed). 

Rated 3 out of 5 stars

Hi,

This addon has resolved a long pending bug. But it would be even better if you could provide an option wherein the confirmation box would popup only when there are more than one tabs open.

This review is for a previous version of the add-on (2.0pre.1-signed). 

It's not called Sometimes Ask :)

I'll consider that suggestion but I've tried to keep it as simple as possible.

Nice plugin! Rated 5 out of 5 stars

It has one little bug however... if you keep CMD+Q pressed you better quit and start firefox again because it won't stop warning you xD

Anyway, thanks for the plugin, it saves a lot of trouble (and time).

PD: Confirmed working on FX 16.0.2

This review is for a previous version of the add-on (2.0pre.1-signed). 

Rated 5 out of 5 stars

Love it. Does exactly what it's supposed to. It saves me from accidentally quitting Firefox at least once a day.

This review is for a previous version of the add-on (2.0pre.1-signed). 

Rated 5 out of 5 stars

It's a sad day when an ADD-ON is required to fix an annoyance like this... kudos to zpao for doing just that, and in a very simple way. This gets me out of the snake-pit of trying to follow the 100 different about:config settings that still don't fix it, and the convoluted bugzilla discussions on why it's fixed, not fixed, won't be fixed, is a feature, ... (!@#3$?!)

This review is for a previous version of the add-on (2.0pre.1-signed). 

Great Rated 5 out of 5 stars

does just what it says and saves me from habitually closing too many windows.

This review is for a previous version of the add-on (2.0pre.1-signed). 

¡Perfecto! Rated 5 out of 5 stars

This has saved me countless times. I love it.

This review is for a previous version of the add-on (2.0pre.1-signed). 

Rated 5 out of 5 stars

Works great with Firefox 13.0.1. Many thanks.
Wish it works with Thunderbird too...

This review is for a previous version of the add-on (2.0pre.1-signed). 

It just works! Rated 5 out of 5 stars

Although I wish this extension wasn't necessary, it does exactly what it's supposed to and works in 10.0.2.

This review is for a previous version of the add-on (2.0pre.1-signed). 

Rated 5 out of 5 stars

Confirmed working on Firefox 9.0.1. Very useful on my notebook and it's dodgy touchpad

This review is for a previous version of the add-on (2.0pre.1-signed). 

Rated 5 out of 5 stars

Works smoothly on FFox 5.

Feature request!
Please add the same context window for the Ctrl+Shift+W on Windows and Ubuntu.

Thank you!

This review is for a previous version of the add-on (2.0pre.1-signed). 

Rated 5 out of 5 stars

One of the most useful add-ons I ever have installed. Thank you! ;)

This review is for a previous version of the add-on (2.0pre.1-signed). 

Rated 5 out of 5 stars

Great add-on. I can't count the number of times I've fat fingered the Command-Q button. This is just what I needed!

This review is for a previous version of the add-on (2.0pre.1-signed). 

Rated 5 out of 5 stars

Excellent! My clumsy fingers thank you.

This review is for a previous version of the add-on (2.0pre.1-signed).