The discoverability of shortcuts in zellij is great! Besides this and tmux you can also try

* mtm: https://github.com/deadpixi/mtm

* dvtm: https://linuxconfig.org/an-introduction-to-terminal-multiple...

* abduco

None of these have ever stuck with me because I don't like how they alter the ability to scroll (although I haven't tried the newer tmux mouse/scrolling capabilities).

To maintain a session I prefer to use EternalTerminal (screen messes up scrolling much like tmux).

I find most of my windowing needs satisfied by tabs in the terminal and by using Xmonad on Linux or yabi on Mac whereas some Mac users seem to be at least partially making up for the lack of window management with tmux.

I just switched to using wezterm as my daily terminal. It is written in Rust, very fast, featureful, and works cross platform.