- It has vertical tab support out of the box (is this even possible in chrome? I know Firefox can do it with extensions) - it has very flexible support for automatically sleeping and closing unused tabs. I sleep tabs after an hour except for a couple sites I’ve whitelisted.
Both of these are features other browsers either don’t have or require opening up a potential security whole to a 3rd party through extensions.
Sideberry has every feature of TST I ever used (and a few more), and is reasonably fast.
So far it has been a superior experience to vanilla chrome, and at least in Linux I haven't seen any "adcrap". I installed Ublock Origin and everything is pretty neat.
Vivaldi browser[1] has supported native vertical tabs for many years (possibly since its introduction in 2015), though sadly it doesn't get as much coverage in the media or in discussions. Made by the original Opera founder who left that company in ~2010.