Absolutely LOVE this extension. I used to have other Panorama spinoff extensions, but they were all glitchy and had a chance to lose my tabs all the time. This one is by far the most refined, and I haven't lost my 200+ tabs once in the months I've been using it!

As I'm always working on a few things at once, I really missed the Firefox tab groups. I was overjoyed to find this extension, and I'm happy to report it works remarkably well.
I love how it supports my pinned tabs, and even has a dark mode.
Photodiode, thank you so much for the time and effort you have dedicated to developing this addon. I really appreciate it.

It's great. Extremely useful.

However there have been no commits for over a year, so it looks like this is now abandonware until someone picks up the mantle and branches the project.

I would love to be able to drag tab groups between windows. Currently I have to keep both (or several) windows open to preserve the tab groups within.

La mejor para organizar nuestras pestañas <3 , espero que algún día vuelva a funcionar con Firefox Aurora, ya que desde la versión 67 no está funcionando :( // The best of tab grouping plugins, I love it so much because I am a widow of Tab Groups! Sadly, this doesn't work in Firefox Aurora 67, I hope they can fix it soon (I f*** love and need this addon!!)

The most compelling reason to use Firefox over Chrome.