To use these add-ons, you'll need to download Firefox.

Qqen
Tignit n uzegrir

Iceggiren i Tree Style Tab

Tree Style Tab sγur Piro (piro_or)

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Icegger-it itistoday
sɣur itistoday, 8 år sidan
You sir, are a hero.

And those who want FF to look like it did with the previous version of Tree Style Tabs, see the hints here: https://news.ycombinator.com/item?id=15342728