Usefull

Some people can say, use CTRL + SHIFT + T, But I can't save a session about last month this way and control what page I will open.

Best session manager for FF57 so far.
Keep it up.

I've been testing it for two weeks and it works fine.

Does what it says on the tin. The new update gives export options, so it's even better.

It is the best for now. Session manager was even better but the important things are:

it is open source;
it can import sessions saved by session manager.

In fact too many times I had to lose all my sessions after moving to a new "session manager" addon.

I give this add-on 5 starts, just because it recovered all my sessions from session manager after the update to FF57. Sure, it's not the same yet, but I guess the creator knows what functionalities he needs to add.

This has been good so far. Does exactly what it said it will do. Looking forward to seeing the new features the developer is working on.

For all the negative reviewers, please read the description carefully, and understand that not all features can be imported into extensions. Stop punishing the developers of new add-ons trying to make things work in FF57 for things out of their control, its counter-productive.

It works well,I don't know why many poeple diss it.If there is a litte weakness that 's it open multiple windows for each saved session

Do people even realize that this is not Session Manager? It's developed by a different person and never claimed to be a successor to Session Manager. Your one star ratings are unfair as this add-on is still in its early stage of development and going its own way. My original rating is three stars, but giving it five now as a countermeasure to all the bad ratings.

good extension, would be useful a crash saving feature

well done! Everything works! Importing works without problems. Thanks!

Works great!!

I like how you can save your tabs and name it when you save them accordingly.

Love this. It has a much nicer UI than the one you have been inspired by. That one had the functionality, so far this serves all of my needs! Well done.

Update: Wow, it's getting better and better!
Features needed:
- more compact list of sessions (see Session Manager)
- save the scroll position of tabs (needs an API change)
- restore the back/forward history of tabs (needs an API change)

Done:
- ability to import sessions from Session Manager (first feature to add, as users won't migrate if they lose their sessions)
- only reload the selected tab of each window (nice workaround to bug 1378647!)
- ability to save only a window instead of all of them (see MySessions for a great GUI for it, but all windows should be saved by default)

Thanks!