Solo desearía que su ícono fuese más lindo, así se vería mejor, ya que lo tengo colocado en la barra de herramientas permanentemente

It is a good addon. However, I got an IndexDB error as soon as I updated it today. I tried what was written on the GitHub wiki to no avail. Please fix this.

How do I save sessions (permanently) or sort of favorite them so that I can open the groups of tabs later on? Can we replicate Simple Tab Groups functionality with Tab Session Manager ? Thanks.

Very good addon!
Does only save the active page for each tab. Having an option to save each tab history will be great, but it seems that it is due to a limitation of Firefox's API.

Good session manager, has good features. Sessions open fast. A problem for me after saving a fair number of sessions was slow opening time. I'd start FF and the TSM would not populate with sessions for perhaps 10-15 minutes. Is it loading sessions all that time? Perhaps should load auto-save sessions last? As said in another review, wording of how to save backups is confusing. Better wording: "Save location must be under the Download Folder (set in browser settings)."

One of the most useful add-ons.

very useful tool for all MFF Users like me..

The original order of the tabs is lost when the window is restored.
In my case, the extension is to blame: [https://addons.mozilla.org/en-US/firefox/addon/tab_position_options]
The error is in option: [New Tab][Right of current tab],
It works if you leave it as [Default].

Another solution is to use
https://addons.mozilla.org/en-US/firefox/addon/tab_position_options

with the other extension

https://addons.mozilla.org/pt-BR/firefox/addon/always-right