Fabulous!!!! Rated 5 out of 5 stars

This addon saves my messed tabs & brain!
Recommend to every Firefox users whose are used to open too many tabs.
Thanks for the developer!

Just brilliant. What a widescreen computer needs Rated 5 out of 5 stars

So much easier to use than standard top based tabs. I can pin the sites I use daily, and keep threads of thought processes and searches together.
Being on the left gives me more space vertically on screen, which is an additional bonus.

This user has a previous review of this add-on.

No browsing without it Rated 5 out of 5 stars

Thanks for this essential addon. I don't know how something like this isn't standard in all browsers.

MALWARE - keeps re-installing itself. Rated 1 out of 5 stars

This is like the Ask toolbar! There is no coming back from having it.

I never knew tabs could be so useful Rated 5 out of 5 stars

I use way more tabs since enabling this add-on. And I don't lose tabs as I did with tabs at the top even with less tabs.
Only thing I could ask for is that it work without restart.

The best Rated 5 out of 5 stars

This is the most important add-on for Firefox. Chrome does not have a good equivalent. Vital for vertically challenged screens that are being pushed on us.

Rated 5 out of 5 stars

Single reason why I use Firefox over Chrome

This extension is 90% of the reason why I use Firefox Rated 5 out of 5 stars

Not perfect (yet), but pretty close and better than anything else.
I do prefer the ability to hide the top menu the way Tab Tree does though, and it can be hard to drag a tab into a hierarchy sometimes. A black theme would be great.
Mozilla should hire you.

This user has a previous review of this add-on.

Needs an enable/disable button and a shortcut (configurable) Rated 4 out of 5 stars

Needs an enable/disable button and a shortcut (configurable)

Best Firefox Add-on ever Rated 5 out of 5 stars

Not kidding or exaggerating - This add-on is one of the main reasons I use Firefox as my main browser. I typically have dozens of tabs open, and this is the best for managing that level of chaos. I can easily see what's open, switch back and fort, rearrange tabs to help with my workflow, etc. This app is a "Must Have" for any Firefox user, and I don't know how I could manage without it.

firefox is dead Rated 5 out of 5 stars

but this plugin is the only reason i still use it

A Must when using more then one Tab Rated 4 out of 5 stars

I am usally using a few tabs same time and really don't want to miss this app. Unfortunatly the latest version seems to be stronger than 'Tab Mix Plus' and so new Tabs don't open at the position I want. It would be very nice if there would be an option like: "New Tabs choose Options from Tab Mix Plus" Thanx a lot

I would quit surfing the Internet if this plugin would cease to exist Rated 5 out of 5 stars

Once upon a time there were browsers supporting vertical tabs. Every day this neat and useful function made life easier when surfing the Internet. One day some developers thought that no one would like to have life made easier and removed the feature. Because of that at least one person was getting more and more frustrated. Until finally it found THIS add-on giving back so much luxury and even more, no longer simple tabs but even tree style tabs. Tree style tabs the perfect tool for tabbed browsing!

This is the only reason I'm using Firefox Rated 4 out of 5 stars

I love this plugin: this is the only reason I'm still using a Firefox.

There is a bug when tabs are hidden by user. Mouse is unable to do anything in area where tabs has been shown until resize of browser is performed.
Similar problem when you try restore tabs.

this is way better than horizontal tabs Rated 5 out of 5 stars

this is the best way to organize lot of tabs

Background open with Speed Dial Rated 3 out of 5 stars

Background open with Speed Dial add-on doesn't work.

This user has a previous review of this add-on.

Rated 5 out of 5 stars

Ditch Tab Group and Vertical Tabs Reloaded for Tree Style Tab.
Working nice too with Tab Wheel Scroll!

This review is for a previous version of the add-on (0.17.2016031101). 

Awesome addon Rated 5 out of 5 stars

Thank you for this awesome addon. I'm using it every single day for personal and professional reasons. I was wondering if there was plans to get it working with electrolysis (multi process firefox) Searched everywhere, no clues.
Once again, great work

This review is for a previous version of the add-on (0.17.2016031101). 

very fine Rated 5 out of 5 stars

we like tree style tabs ... please sak Mozilla to not deactive again tree style tabs

This review is for a previous version of the add-on (0.17.2016031101).  This user has a previous review of this add-on.

Great vertical tabbar, hides during fullscreen, & compatible with other tab extensions Rated 4 out of 5 stars

Great! This is one of the few vertical tabs add-ons that works flawlessly out of the box, including hiding during fullscreen videos, and fully compatible with all other extensions I'm using: Multiple Tab Handler, ColorfulTabs, Tab Mix Plus, Tab Kit Mouse Gestures, & Classic Theme Restorer (enable "squared tabs" option for compatibility with ColorfulTabs).

Unfortunately, it seems to be corrupting some of my tabs when restored with SessionSaver...

This review is for a previous version of the add-on (0.17.2016031101).