[Deejahll]

If your needs are extremely simple (e.g. graphical dialog boxes launched from a shell-script,) then there's zenity (gtk): https://help.gnome.org/users/zenity/3.14/ and kdialog (kde).

For an ncurses-style version of zenity/kdialog, there's dialog http://linux.die.net/man/1/dialog and whiptail http://linux.die.net/man/1/whiptail .