Hi,
I have setup a google code project for this Alfresco Zimlet.
alfresco-zimlet - Project Hosting on Google Code
The head branch also includes some initial work I did for adding Alfresco search on Zimbra UI.
Let me know if you want to contribute to this project.
Here is a list of things I think we might need to improve it
1) Replace custom webscripts with CMIS services.
2) Leverage new Zimbra Tab interfaces.
3) Test it on latest Zimbra/Alfresco versions.
Also if you are using it with Alfresco enterprise version, please let me know your use case etc.
Thanks!
Yong Qu