Tmux + iTerm2 is a fantastic combo that takes all of Tmux's pwer and removes all the downsides.
I searched if anything else used Tmux's Control Channel on Linux to replicate iTerm2's features, and I'm sad that I found nothing.
(Frankly, it's kind of stunning to me that one terminal app on macOS has more useful features than the plethora of me-too terminals on Linux)
If by "useful features" you mean intercepting tmux output and having it integrate with the terminal, then no. But more generally, I think the closest thing to iTerm2 on Linux is Tilix [1].
Such an enormously usable thing, why isn't that readily available on Linux?
So much of it is lost because work machines have been either windows or Ubuntu. I tried a few things but nothing comes even close to the level of overview and speed you have with iterm. In the end I usually end up using multiple windows and too much mouse..
The tmux integration is just the cherry on top
Alternatively, there's apparently a forked version of mosh out there with iterm2 support hacked in, but I've not tried it.
Unfortunately.