Dear Administrator,
I have checked the above listed scripts. Based on our community's needs in congunction with present features offered within the Feng Office script, most of these scripts listed above are not quite up to the standard for collaborative purposes. The only two scripts which stood out are: FCKEditor.net & Zimbra.com
Implementing the FCKEditor would be a nice update/change for the Feng Office. It would improve its overall appearance, and it appears to be light weight as well.
Zimbra has a great feature of being mobile friendly, and being able to synchronize with the local machine is a big plus.
In my opinion, the present version of the Feng Office is still one of the best collaborative scripts available out there.
Thanks.
.Mirsad