funny thing actually: Firefox had tab-groups built in. They then decided to remove it as an builtin feature and offer it as an extension instead, but not long after, when they switched the extension system, the extension was no longer supported

It’s good to see this result replicated. The only thing I wish Firefox had natively was tab groups, they’re a really useful feature for various organizing things. Otherwise, they’re clearly one of not the best browser on the market.

Just use "Simple Tab Groups" extension. It's pretty good. And on top of that you can use other extensions, so that for example all tabs within a group automatically get added to a container (isolating them from other tabs). Really useful when shopping for stuff so advertisers can't track you around different shopping sites (or at least it makes it more difficult)

Try using the profiles functionality, it let's me separate my browsing and tabs for each client and personal stuff. Multiple profiles ftw

Firefox not having tab groups is the only reason I haven't switched over, once they do that I'll probably never use a chromium browser again.