Being here because the experience of Edge. The equivalent there was simple and FAST.

This addon, makes no mistake in terms of functionality and it did what I was looking for.

Using the UI is not quite fun, however.
The biggest issue is, it requires multiple steps to access the mostly used function.
For "tabs aside", it needs
1. click the toolbar button.
2. move the pointer to the first menu entry.
3. click it.
I know there is a keyboard shortcut, but I am not a fan of that.
It would be much better if other options are moved to right-click menu and left-click directly put tabs aside.

Also, when removing a session, the user can be asked for two confirmations at worst, yet there are no options to remember the decisions.

Anyway, thank you for making this useful work.