Fantastic plugin. I eventually used my profile's userChrome.css to hide Firefox's horizontal tab row because I just don't use it anymore, and I much prefer Sidebery's use of tab panels over Floorp's use of workspaces (not to mention Sidebery + Firefox don't crash on me constantly, or ever).

Of note: if/when customizing the size of tabs height in Sidebery's style settings, stick to px and don't use relative units like ems, as this will mess up your drag & drop interactions.

Tabs started to merge, needs fixing ASAP

Tab panels have started to merge. This is very bad. Now dozens of sorted tabs are mixed together.

WOW! Very in-depth and extremely customizable tab extension, clearly a lot of effort has gone into it's development. Thanks to the dev(s)!

This add-on is honestly amazing! It takes a bit of work setting everything up but that is only because it is so insanely costumisable.

Awesome add-on! This helps me a lot for managing multiple projects at the same time. I feel it could use a few more colors and icons for distinguishing projects, but since it's free, it's still definitely 5 stars from me.

fantastic...good workflow!

Really good add-on if you want to take control of your browser even more having a sidebar is important. Well done to the maker.

Its very nice if you dont want or can't use the Zen Browser(Firefoxbased) But I use and recoment the Zen Browser! :D

searched among other extensions the copy of Opera features, this one is the best!