Although Orion also has built in a (simpler) implementation the most important Firefox for me and I assume many others, tree style tabs. Orions built in version doesn't have the full customizability from TST but it works and presents tabs nested by what tab the descend from which is the most important feature.
And it works really well from what I see.
Although Orion also has built in a (simpler) implementation the most important Firefox for me and I assume many others, tree style tabs. Orions built in version doesn't have the full customizability from TST but it works and presents tabs nested by what tab the descend from which is the most important feature.