I'm not sure what to name this question, as I am not sure what the technical name is for the type of program I am talking about.
Is there a program available for Git Bash that is similar to screen, tmux, or byobu? I know all 3 are available for Cygwin, but I can not find information about using them with Git Bash. I like Git Bash because it is simpler and takes up less space, among other things.
Nowadays the official git for windows is based at msys2 which seems to have tmux package at least. You can install g4w sdk as described here and then install tmux through pacman.