BearLibTerminal is described as 'library that creates a terminal-like window facilitating flexible textual output and uncomplicated input processing' and is an app in the OS & Utilities category. There are five alternatives to BearLibTerminal for Linux, Windows, Mac, Online / Web-based and Haiku. The best alternative is ncurses, which is both free and Open Source. Other great apps like BearLibTerminal are rot.js (Free, Open Source), libtcod (Free, Open Source), tui-rs (Free, Open Source) and FTXUI (Free, Open Source).
ncurses (new curses) is a programming library that provides an API which allows the programmer to write text-based user interfaces in a terminal-independent manner. It is a toolkit for developing "GUI-like" application software that runs under a terminal emulator.
rot.js was designed to provide help with traditional chores of roguelike programming. It does not use or depend on any other JS framework or library. It is an Open Source Software released under the BSD License.