FINAL CUT - Library for creating terminal applications with text-based widgets
ncurses - ncurses (new curses) is a programming library that provides an API which allows the programmer to...
Turbo Vision - A Turbo Vision port to the GNU compiler and more
newt - Programming library for color text mode, widget based user interfaces.
Slang - Slang is a powerful visual programming language using a newly developed stream-based paradigm.
termbox - Termbox is a library that helps making terminal-based pseudo-GUIs.