For security reasons, my work network isn't connected to the internet; so migrating to Google, iCloud or .mac aren't solutions.

I've tried Bento (sharing is very limited, no real way to keyword to the address book record), Daylite (way too many users with problems once it is beyond the trial stage), BusyCal (won't sync to PDA w/o MobileMe, which is going to iCloud), several others and still nothing comes close.

Due to evolving security issues, even within a secure environment, we now have to go to full disk encryption. For Mac, easiest is to just go to Lion.

Has anyone tried NUDC and/or the servers on Lion or Lion Server?

Thanks in advance,