Check out Etherpad (http://etherpad.org/ http://etherpad.org/). It's entirely open-source, so you can host all your own files on company servers/an intranet. C

Check out Etherpad (http://etherpad.org/ http://etherpad.org/). It's entirely open-source, so you can host all your own files on company servers/an intranet. Certainly not a replacement for all of Google Apps, but it's a good start.