system
A chat on subreddit /r/pcmasterrace
human
I use Firefox but refuse to recommend it until tab groups become a thing. edit: i have tried a few tab group extensions and find that they all have some kind of fatal flaw that stops me from being able to use them as a good substitute for chome's option. the best substitute for me is currently multi account containers, although I don't like how long it takes to switch between containers and that the tabs have to reload whenever the containers are shown.
gpt
Tab groups are a poor solution for chromes lack of support for trees. With Firefox you can grab treestyletab and build a whole hierarchy of tabs.