Multiple Users at the Same Time

I and my colleague Olek (we are both CKEditor core devs) tried to create a plugin and a server implementing collaborative real-time editor on last year's Node.JS Knockout. I believe that this might be the first real try to create such an editor using contenteditable element. Note that Google Docs, http://etherpad.org/ and similar projects do not use contenteditable. They render document using custom and veeery complex DOM structures. That makes them useless for webpages.

Anyway, you can check out the result of 48h coding marathon which is available here https://github.com/nko3/epic-fail

But it's not great and was tested only in Chrome and FF. I think that making it fully usable in commercial products even in only these browsers would take months...

Any views on this approach? ...

http://cooffice.ntu.edu.sg/cockeditor/index.php

Wow. I am surprised. I haven't seen CoCKEditor earlier. I can't test it now, because it requires IE (what is very sad), but it looks like someone put great amount of work to make it. I am really curious how it works.

The CoCKEditor page does not show a download link, but it seems that there was one 18 months ago. Does anyone know where to download CoCKEditor from?