Over the weekend I came across a new mac program that might be of interest here. Its called Crm4mac. It looks good so far with my testing.
From there site:
"You care about your friends and business relations. You need to know what you discussed with whom, when you last met and what precisely was communicated on paper. Perhaps you even want to invoice based on events in your calendar. Somewhere, yes somewhere in your Mac all these facts are stored, but where?
Crm4Mac shows you, swiftly and surprisingly easy."
For the record, i'm not associated with them or there products.