Built-in session manager.

[Crash]

The idea to add a built-in session manager to the browser (replacing the Tab Session Manager https://github.com/sienori/Tab-Session-Manager/).

[Jon]

Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.

[AlexTuduran]

Having an explicit session manager is paramount for working with multiple tabs and instances of Firefox. I had to re-install Windows and had literally no way of keeping my opened tabs and instances. I had to do it under the hood, by copying the contents of the last session, going through every file and making sure everything is synchronized. That's unacceptable.

[brian_harkness]

I agree completely with the need for this.

Following the changes made post version 47... the disappearance of Tab Groups Manager, MAFF archiver and Session Manager were why I moved over to Google Chrome..  I would dearly love to resume using Firefox...