I've been using this for a few days and it's been exactly what I needed so far. I'm one of those people who opens way too many tabs when researching things, figuring I'll do the slower sorting and bookmarking later when I'm pressed for time. Sidebery lets me manage any number of tabs better than most of the add-ons I've tried. Give it some time to really adjust to the change. Loads of configurable options to allow me to fit it pretty much perfectly to my use profile. It appears to also be managing memory better than just overloading the regular tab bar but I'll need to track that longer term.

Amazing addon. Was using tree style tabs but for that I needed like 10 addons to get most of the features I wanted. With sidebery it come with everything plus a bunch of stuff I didn't even know I wanted. The panels are a game changer.

Brilliant. Had been using Tree Style Tab for the last few years but that took a lot of configuring (and re-configuring) and I recently noticed it was significantly impacting start-up time. Had been waiting (for ages!) for vertical tabs to be supported natively, but was very disappointed with Firefox 136.

Decided to give Sidebery a go and I'm impressed. Minimal customisation required to get it looking/behaving how I want, and it has significantly speeded things up.

Thank you!

Amazing extension with a lot of options and customization! Has everything I've been looking for. Take some time to get to know the extension before leaving a 1 star review.

I used tens of browsers with built-in tab organization and profiles the past 8 years, and none of them even come close to the level of organization possible with this extension.
10/5 stars.

Yes, there are a lot of settings, but once you understand how to use it, Sidebery is a must-have for Firefox. By adding the use of “userChrome”, I have an even better experience.