Updated after developer's response:
I use Panorama Tab Groups add-on which breaks tabs into groups. The Firefox original list button opens up a list of tubs in the active group, which is convenient. Yours, instead, shows all the tabs including the hidden, which makes no sence.

If you consider updating the add-on to match tab grouping, I would be happy to use it.

What means these:
1. Dim unloaded tabs
2. Use containers colors — https://imgur.com/VzWlQCw
3. Bookmark - No color is colored to understand that I have already added it to the bookmarks. Well, to be honest, the option is absolutely useless! — https://imgur.com/dldXzxh
4. Discard - for what is it for?
5. Default behavior - for what is it for? — https://imgur.com/SWgn7KE

NOTE:
Not compatible with this "Pinned Tabs Fix" plugin. Pinning tabs with your add-on is big pain in ass❗😣

Im' really sorry to teel you that your add-on is shit 💩

Go get ’em, tiger!
Have a wonderful day!

Is it possible to add an option to let users chose the icon theme to be same as original tab list button?

nice but without search option not very usefull

This is cool.
Sidebar is not cool.
But I request the installation of an optional switch to prevent auto-closing and close button.
Because I want to use this as a pseudo-sidebar.

Very nice highly-customizable extension, must have for efficient tab management and switching between them. List loads pretty fast and opens in the popup, which is so useful and user-friendly. Icon is displaying tab count number Using it for one or two years already, I like to see it developing and improving with each version!

Here are some of my suggestions:
1. The thing extension lacks is the ability to discard or freeze tabs, still need to use other addons for freeing resources (mem, cpu) consumed by tabs. That would be highly appreciated as tab list already displays inactive and loaded tabs as grey and black titles.
2. Would like to change tab count number, two-rows icons&font colors&sizes as well.
3. Option for action buttons to be displayed only when the cursor howers above each tabs line.

Where can I send any other ideas or questions?

Thanks for developing this!

Nice extension :) Is it possible to add an option to only display pinned tabs ? Thanks !

Good but,

1.I would like the panel is stay opened when the tab is removed.
Without this feature, closing multiple tabs is inconvenient.
If this feature is supported, I would like to continue using it.

2.Button looks bad.
Especially I like black 'X' remove button which is used a lot these days rather than red '-' button.

3.Speaking of terms, "Close" is better than "Remove"

Edit: Thank you for adopting these features I requested in the new version.

Nice, fast and stable. Especially like the gray-out (meaning "not loaded yet") indicator.
Several enhancement I want:
- Text search.
- In the tooltip popup, option to show both the header and the URL at the same time.

It's working after 2-3 times open close the list. At first it will be blank

A very nice add-on. I especialy like the keyboard navigation and tab count in the icon.

This is everything I've ever wanted from a tab listing extension! Well, almost everything. I always have several YT tabs open, could you add the symbol for which tabs are playing audio, please? :)

Interesting extension! But I want also neutral gray icon on Firefox toolbar. Please add gray icon to options. Is it possible? Thanks!

Update: Very fast response. Wow! Thanks. I now rate 5/5.

This addon is perfect and indispensable.
One question: is it possible to replace the icon color orange with a freely selectable color?

update:
I was able to change the icon color with a css-code.
Still it's a very good addon, thanks for that.

Nice addon. Could you consider adding a searchbar and allowing users to select multiple tabs to do operations on all those selected tabs?