Notcurses' principal author aspires for it to provide a widget toolkit for TUIs[1], but much of the demo and much of the commit log to date is heavily focused on graphical capabilities and lower-level details.
It may be that one day it ships with a robust widget toolkit; or perhaps someone else will build another library on top of notcurses with that as the principal focus.
I'm also impressed with the effort put into FinalCut[2], but notcurses seems to me to be paving a more interesting path forward for TUI development.
