Comment by justinhj

There are attempts to extract it but I'm not sure any are successful. org mode is so tightly intertwined with Emacs features. For example tables can have calculations where the expressions are implemented in emacs lisp and can use emacs calc functions

org babel, which allows execution of code in blocks on the page and communication between them requires Emacs's comint (command interpreter) which would need to be ported to whatever application "displays" the text.

Folding and unfolding headlines requires the exact same display features that emacs has.

In general it seems the link is so tightly bound that it would be as well to simply embed Emacs in an application rather than extract org mode from it.