This extension has become a must in my workflow! I love being able to group my tabs and have quick access. When I don't want to be distracted by a topic, I simply collapse the group and the clutter goes away. It also helps with Firefox's memory management by unloading tabs in the collapsed groups.

I had an issue with Zen browser and Sideberry where all the tabs disappeared. That was 6 months ago and I believe it was more related to Zen than the extension. Since using Sideberry with Firefox directly, I've managed to keep all my tabs. I also like the automatic backup feature!

Thanks to all the devs of this fantastic extension!!!