A Terminal UI, or TUI, is a user interface that can be manipulated in the terminal, but that is not interacted with via shell commands.
Programs with a Terminal UI are written to function without the use of a graphical user interface, enabling easy access to desktop environments with tools such as SSH.
Some choose to use their system in an entirely TUI-based fashion with programs such as vim, mutt and tmux. Unfortunately, many websites and web-based programs are not usable without a graphical user interface,
TermKit: an interactive terminal command application. helps users understand the terminal with lots of visualizations!
https://osxdaily.com/2017/05/27/run-hypercard-macos-web-browser-emu/ hypercard: a minimal, no-code UI toolkit