It helped me a lot in managing tabs

Installed it after hearing great reviews, and so far I really like it.

Najlepsza!

Excelente aplicación para las personas que abran muchas pestañas y no perderse, igual se le puede asignar un atajo de teclado para abrirla y cerrarla cuando quiera.

Alas, I could not understand why other users like this application.
I installed it three times in the past months and every time after a day or two I removed it:
- for managing a large group of tabs (500+) it is not convenient, it loads very slowly, there is no fast movement between tabs;
- groups of tabs cannot be pinned / locked or at least somehow customized in order to better navigate, for example, I have 13 groups and even when minimized they occupy half of the sidebar;
- "new tab" behaves inadequately with any settings, it often opens very far;
- working with groups is very inconvenient, ordinary actions take three times longer than in other extensions;
+ many more minor inconveniences;
But the main disadvantage is that it is SLOWLY and CRASHES! With the tab cache enabled, despite the "self-cleaning" after an hour of operation, FF takes 10-12 GB of RAM! and the whole PC starts to slow down. I thought that disabling the cache would solve the problem - but no - the application SLOWLY ON ITSELF - after an hour of work, the processor periodically starts to reach 100% load. I even tried running this extension on pure FF (but with my tabs) - the same thing - slowing down.
Alas,I did not understand why people voluntarily use it (because for small groups of tabs there are more convenient options such as "Panorama Tab Groups", and for large groups, in my opinion, it is much more convenient and faster "Simple Tab Groups" (-it is not perfect, but after trying dozens of other extensions - I have so far stopped at it).

Good luck!

Love this addon! I want to contact the creator to tell him about a bug. When you close nested tabs you get a warning that you are closing multiple tabs and you can click a box to not warn you again. No matter how many times I click that, it still warns me. I had to turn it off deep into the settings of the addon.

This extension is very useful for being productive!

This plugin is fantastic! Took some time to get used to, but this is such a superior way of organizing tabs! Just be careful not to build too many, since it's effective at doing its job lol

Tree Style Tab de Piro (piro_or)