Hello HN,<p>We released Papyrus here on HN a few month back.One of the most requested features was to be able to collaboratively edit books.
We have tried to provide a collaborative editing environment where multiple authors can simultaneously edit an ebook(all made possible due to <a href="http://sharejs.org/" rel="nofollow">http://sharejs.org/</a>)
Your feedback would be very helpful.