The best implementation of vertical tabs you will find ANYWHERE, extremely smooth, feature-rich, actively developed, and customizable with tons of setting options!

To those using the review system to report bugs: report them on Github.

Essential if you regularly have more than 10 tabs

life saver!!!

It's literally perfect

works perfectly and so customizable so fits my very specific workflow :)

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!