Text User Interfaces for DOS
FDOSTUI is free source code for building text user interfaces. The language used is C++. It is inspired by the Fast Light Toolkit (FLTK). The latest version now supports using an INI file to configure your interface. The majority of the code and documentation is released into the public domain, with some modules derived from FLTK under the FLTK license. Read more at the FDOSTUI website.