it would be great if pinned tabs can also have thumbnail on hover

Wish the vertical tabs can be positioned to the RIGHT side of screen.

https://github.com/gomita/visualtabs/issues/3

Sure it is better then default. In year 2020 one row for tabs :D Oh browsers are trash. My father use average 30-50 tabs. It is very good old Firefox works ok, with this new no thanks. I need browsers for computers we are using now 8 GB is average... I have 2x 8GB - 4 slots. I use 6 groups with 200 tabs without any problems... I can backup groups with Tab Group and use it anywhere.

I really hope that will soon any new groups of developers created browser like it was old Firefox, but I think we will stuck with this "new" Browsers and they are the same as IE in windows 95. They can`t even added by default Last Closed Tabs icon.

Go job for addon. Maybe I will use it when Firefox v52-57 will not work anymore on pages, but before that All-In-One Sidebar is the best sidebar in Browser History and Tab Utilities Fixed etc. for fast and easy browsing. Yes "Tab Scope" is awesome I use it now and for a lot a lot of years. Awesome addon preview with zoom scale by right click. Old days when Firefox was created for users...

Chrome: 68.91%
Firefox 9.25%
Desktop web browser market share according to StatCounter for October 2019.

In last 10 years Multi-row by default in all browsers not in year 2020 only one row same as 40 years ago :D :D. In settings user will set min/max size. Who even use 10" screen any more PC users use average 24" (20"- 28") on this screen who even care, if they are 3 or more Tab Rows. Every user use Browser different...

Congratulations! Quite as good as Vivaldi's thumbnails of tabs. Please add grouping tabs function :)