Have you ever used a text editor such as vi, emacs or nano? They open up in a new "window" (called screenbuffer) where they do their thing, and when they quit, the original console is restored without any output on the screen. Other tools such as top, iotop or less do the same. It's amazing! Sadly, the System.Console-class, which the vast majority of developers use for their Console I/O needs, doesn't support multiple screenbuffers. Not even a tiny bit.
Because it's there. And after using Google for a bit, I couldn't find another library which enables you to use multiple screenbuffers in C# and other .NET languages.
I am using the MIT License, which should be the most permissive one. Just add a note somewhere that your program uses my thingy!