Awesome add on but left 2 things in my opinion for it can have 5 stars, the way to change color schemes, not so dark or default and close tabs with middle click mouse. I'll change it to 5 stars when we have this feature.

Nice. Basically required for Firefox use. (Firefox really needs to add this absolutely normal tab-handling functionality to the browser--Chrome's had it since the beginning.)

This may be the same as a previously existing extension called "Select and Do"? (It's been a while since I used Firefox, but this came up when I searched for that extension which I previously used for this purpose.)

I feel like I may have preferred that one, but I might be completely making this up and this may be the exact same extension with a different name. Who knows.

almost perfect, but:

please add:
* show global tab count in icon
* search tab by name/url & switch to it
* show all tabs from all windows option

Now it works fine v2.1.2
but invert selection doesn't work

Mostly good, but when I move the icon into the top bar, while using the Default theme, it remains black against the dark background instead of switching to white, like so: https://i.imgur.com/rqz12Xd.png

Works well. 4/5 because moving tabs to new window doesn't always close them in the old window.

A user-defined location for bookmarked tabs would be a lot more useful

Very nifty little addon. To Devs : Please support Firefox 52 Extended Support Release. (Using ESR because Quantum has broken many invaluable addons i cant live without) I had to install an older version of your addon to work with ESR.

Almost as good as pre-FF 57. Only appears to be missing "gather to new tree|folder."

Slightly awkward for dragging of selected tabs -- need to click the menu bar's "select and do" icon to close the context-menu pop-up, then can re-click on selected tabs to move them.

Copy Title & URI doesn't work very well on unloaded tabs yet -- copies the stored data, e.g.
"
Scientists on new supernova: WTF have we been looking at? | Ars Technica
moz-extension://27b1e6ca-d9a9-4fc5-95b7-e4748f3303ca/replaced/replaced.html?state=redirect&title=Scientists%20on%20new%20supernova%3A%20WTF%20have%20we%20been%20looking%20at%3F%20%7C%20Ars%20Technica&url=https%3A//arstechnica.com/science/2017/11/scientists-on-new-supernova-wtf-have-we-been-looking-at/%3Fcomments%3D1%26post%3D34302387&favIconUrl=https%3A//cdn.arstechnica.net/favicon.ico
"
But at least the copy is successful (not blank), and can do a regex transform to clean it up.

Creation of a Tab Group folder (in tree style tab) requires manually going to a moz-extension url, such as:
moz-extension://08da1c1c-1712-42fb-a49a-c0ec608df1f6/resources/group-tab.html?title=%22%20%20NEWS&temporary=false

Hats off to Piro, much respect. Paypal Donation needs to be enabled for Piro's extensions.

Following the update to FF57 I am missing its top functionality "close similar tabs". I don't want to lower rating of this (formerly) great addon for some FF-related "mess" however this update makes this addon useless for me. I hope the author's gonna get over the new FF addon policy quickly... EDIT 2020: In fact, lack of this functionality in general made me make my own extension. If interested, check out "Clean the mess!" https://addons.mozilla.org/en-US/firefox/addon/clean-the-mess/

Is there a way for it to work with Tab Suspender to suspend selected tabs?

-- Awesome add-on, by the way.