There are 4 repositories under text-mode-gui topic.
The Abstract Toolkit – a widget toolkit for GUI and text-mode applications.
Terminal user inferface toolkit
The Linux Reconstruction of ZZT
VHDL description of a 80x60 text mode displayer through a VGA port on a Digilent Nexys 3 board.
TGT (TextmodeGUIToolkit) is an object-oriented library, written in C, for creating user interfaces under Linux console
A collection of awesome applications with text user interface.