This is, or appears to be, a collaborative text editor, of which there are many available, and a fairly basic one at that. And not a google docs replacement. Am I missing something?
I can build "my own Google Docs" with a series of many different document store databases. Why would I have a proprietary API back-end I cannot host myself as an alternative to Google? Let me host my own live text editor, text, editor, and all, xthxbai. The irony is pretty funny though.