Edit: It "magically" work after a restart (?), no idea why I am losing the tab/window history, but this now does exactly what I want, excellent!

Looks great, love the density of information. I tried this add-on to save a window's worth of tabs for later user (project-dependent things). I should have tested it better, though, because on my xubuntu 19.10 with Firefox 71.0 (64-bit) the tabs do not restore at all (it just opens an empty new window), so the extension essentially ate all my saved windows.

Unable to restore a saved window or open any tab from it, a new window is opened instead :.( FF 86.0.1 (the latest update could've broken smth) on Windows.
Also would be nice to be able to select tabs in saved windows to move them to new window.

Since last update of Firefox USR (now in version 68.2.0 , 64-bits), I can no longer change from one window to another by clicking in tab icons within the add-on own pop-up window... Besides this current bug, it works great!

I rececntly switched from Chrome to FF. I loved that extension on Chrome, so I was very happy to see it available for FF. It's all good, but there is a problem - if you have more than one opened window and inside the addon click on other than the currently focused window, it can't switch to the selected one. I see quick animation, but then I get returned to the original window I came from.

This add-on works great. The only issue is one that isn't the fault of the add-on. I use a 4k 49" monitor, so I have plenty of real-estate. The popup size is limited to 800x600, which is a limitation of Firefox, not the add-on. Markus was very helpful in explaining this to me and suggesting a workaround. He said "You can open the tab manager in its' own tab however ( right click -> "Open in own tab" ). That would give you the fullscreen capacity that we're seeking..". I find it easiest to open a Firefox window just for Tab Manager Plus. Thank you for porting this great add-on to Firefox!

Wow, this is incredible. I've been avoiding firefox quantum tab management addons as they've always been pretty poor compared to the ones I used to use in firefox back in the day. But I'm glad I tried this, it's incredibly visual.

Superb Extension, 5 stars is not enough for this. Keep up the good work for the mass people. Thanks.

Since I discovered this extension it became an indispensable tool for me and I am glad that the developer agreed to port it to Firefox- I have tested about a dozen tab managers and I find Tab Manager Plus the handiest and the most customizable one. Tab Manager Plus is open source and developer responds usually quickly to bug reports and feature requests.