Brilliant idea poorly executed Rated 2 out of 5 stars

After less than a day, Firefox will slow to a crawl, repeatedly flashing "not responding" every second or so. Eventually, after minutes or hours, this addon will crash with a notification that it cannot write to its database. The only fix for this is to kill the Firefox process and start over. Then you're good for another few hours of activity before you do the same dance again. I'm going to try TabMix.

One of the most useful plugins for Firefox Rated 5 out of 5 stars

It is not just a plug-in. It is a personal assistant. It only lacks online session storage for synchronizing multiple devices, but this can be solved by using Dropbox or a similar service.

Session Manager doesn't load sessions in latest nightly Rated 4 out of 5 stars

In latest Firefox Nightly (version 55), session manager loads empty window when loading a saved session. even though it displays list of sessions.

Very good complement! Rated 5 out of 5 stars

It has helped me many times, great complement to Firefox, continue with the development. Thank you!

Just works Rated 5 out of 5 stars

Thank you.

Best of its kind, use it every day Rated 2 out of 5 stars

Best thing is, I can save entire windows with tons of tabs of researched information. Also, I can retrieve those for later use. Also, it autosaves most crashed sessions, and saves sessions regularly at time intervals I choose. Really useful

But, at one point, Firefox last summer completely erased all my old session manager stuff with a horrid update that removed, not disabled, but removed without my permission all of my . Now, in version 5.2, Session Manager is inaccessable, add-ons, & all the saved windows/tabs in Session Mgr. I had to re-install a new Session Mgr., and start from scratch, with all the old data lost. Now, the latest problem is Session Mgr isn't working in Firefox 5.2, it freezes the browser when I click on it & then nothing works, have to re-boot the browser. I disabled Session Mgr. now, today, and am waiting for this bug to be fixed. Hope this bug is fixed soon. Otherwise, it's the most useful add-on I use & have ever used. Great for college students, high school students, and any kind of professional or amateur researchers who need to do research in their profession, or for their hobbies & activities. I'd give it 5 stars, but this new version of Firefox has disabled plug-ins, Java, Adobe, and all my images don't load.Thanks Firefox, for your wonderful coding these days!

Issues restoring the session Rated 4 out of 5 stars

The extension works nicely, however in the latest versions of Firefox it has issues restoring the session. On startup:
1) Browser opens, a dialog with sessions is shown
2) I double click the previous session. Either of the following happens:
- Browser still opens with a default session (pinned tabs only)
- The restored session appears for half a second and then replaced with the default one (like above)

After that I have to manually click on the diskete icon, select the previous session and reopen it. It ruins user experience when reopening the browser

Also, there're localization problems - my system's language is English (ArchLinux+KDE) with russian locale for metrics system and numbers format. Everything appears in English except this plugin. I consider it a bug in the pugin

Michael Kraft/Sitzungmanager falsch. Rated 5 out of 5 stars

Hi Michael,
die Auswahl der Sitzungsverwaltung in Deutsch MUSS (von oben nach unten) richtig heißen:
Neues Fenster öffnen
Sitzung ersetzen
Zu aktueller Sitzung hinzufügen

So Useful Rated 5 out of 5 stars

This is essential to "my firefox experience." But honestly, without this I would not be using firefox probably. The feature to save previous sessions (thus the name) is extremely useful for people who may have multiple shopping lists or projects going on. It helps organize your life. Each of my sessions typically has over 20 tabs. It's a safety/backup. If you like to have over 10 tabs open at once, I highly recommend this.

For a GREAT add-on too bad it is so poorly documented Rated 3 out of 5 stars

I use and like Session Manager but is it about the worst documented app I have seen on Firefox.
On the OPTIONS tab, he gives your a choice to "Saved Sessions Location" custom or default. He does NOT tell you where the DEFAULT location is. Would it be SO HARD to have where the DEFAULT is IF you hit that button? WHY? When you have to reload OS/Firefox it would be nice to go to that location and move the files to your new RELOADED OS. Searching does no good as if the DEFAULT loc is a SECRET and you lose all your old Sessions if you have to reload OS

This user has a previous review of this add-on.

Works Very Well Rated 4 out of 5 stars

This app is fantastic. Just don't do what I did and format your disk without backing up the Session Manager saved session files. I had thought the session details were saved externally via my Firefox account - this is not the case. Ended up losing over 200 tabs... lesson learned!

Rated 4 out of 5 stars

При использовании расширения в Linux версии Firefox происходит сбой отдельных моментов русской локализации в браузере. В остальном расширение работает хорошо.
When using extensions in Linux version of Firefox fails certain aspects of Russian localization in the browser. Otherwise the extension works well.

One of the best addons ever Rated 5 out of 5 stars

First of all, it works like a charm.
This is a really helpful addon to improve productivity.
For sure a must have.
Keep up the great work :-)

Don't change config! Rated 1 out of 5 stars


A "must have" add-on Rated 5 out of 5 stars

Been using this wonderful add-on for about two years; without doubt, it is on my exclusive "must have" list. Nice surprise is that it also saves ALL open tabs, not just the current page. Very useful in daily Bible reading while researching and examining several commentaries and concordances. Thank you. God Bless!

This review is for a previous version of the add-on ( 

Good Rated 5 out of 5 stars

Nice add-on!

This review is for a previous version of the add-on ( 

Toolbar Button Functionality Rated 3 out of 5 stars

The toolbar button for this addon used to show a list of closed windows across sessions. If you close all windows and open a new one it doesn't show the closed windows. Would really like to see this ability put back in Session Manager.

This review is for a previous version of the add-on ( 

Great! But please add sync! Rated 4 out of 5 stars

Without a sync option I will be sadly dropping use of this add-on.

This review is for a previous version of the add-on ( 

Alway shows undefined error Rated 1 out of 5 stars

I am using it with tab group, and always show the undefined error message box and all of my previous web page were gone.

This review is for a previous version of the add-on ( 

works just great for me! Rated 5 out of 5 stars

thanks for developing, use and love it since years!

This review is for a previous version of the add-on (