editor - Can you do complex editing of Word Documents in a browser?

Question

A friend of mine wants to have an application where people can upload documents in Word (or text) format, and then allow people to make edits to those documents within a browser.

Is there any mechanism that would support adding text "bubbles" for adding comments? Either floating, or off to the side.

Being able to save back to Word format is a must too. Or at least, some format supported by Word, that would still be editable. Saving it as an image is not acceptable.

I was thinking about opening the Word Document in an FCK Editor window, but FCK only seems to have "normal" inline text editing capabilities (although it is great).

Is this feasible?

Answer 1

Yes it is feasible. Google has done that (and it does have comments). So has Adobe. I'm sure there is more.