Terminology is a terminal emulator for Linux/BSD/UNIX etc. systems that uses EFL and has a whole bunch of bells and whistles. Use it as your regular vt100 terminal emulator along with all the usual things like 256 color support (we attempt to emulate Xterm as closely as possible in most respects).
Of course since it uses EFL, it works in X11, under a Wayland compositor and even directly in the framebuffer on Linux. Replace your boring text-mode VT with a graphical one that requires no display system.