zellij is a terminal multiplexer like tmux which for example allows you to have multiple terminals shown in the same window. It works both locally and over SSH. Which GUI would do the same?

I’m currently using zellij after previously having used tmux. For me zellij is a direct upgrade in every way, and the default tmux keybindings are even supported out of the box in zellij which makes transitioning incredibly easy. The only downside is that I have no idea how to pronounce the name.