[mikae1]

Long time TST user here. Yeah, it's actually very stable, even after the it became a WebExtension.

Last year I've used Sideberry extensively. It has some nifty features that TST does not have.

Do these two extensions look native to their host OS? Nope. I can live with that if don't need to use another closed source Chrome clone.

[botanical]

Sideberry doesn't look native, but I use TST and it looks exactly like the Firefox tabbar