App(s) to add/update Contacts from Call Log and from Business Info?

[bpleat]

I'm looking for one or two apps that can do the following:

First:
Go through my Call Log.
(Allow me to specify a date range or other filter)
Ignore items without names or "Unknown" or "Blocked"
For each item, check if a contact exists in ANY of my address books.
If not, create (need to ask me to which account).
For contacts that exist, check if the numbers are the same; if not, offer to add / replace the existing values.
Maybe allow a degree of "fuzzy" search (e.g., ask me if "The Container Store" = "CONTAINER STORE")

Second (related):
Go through my Contacts. Again, ignore Unknown/Blocked
For any Call records that have a name (maybe just for Company name?):
Look up fields (phone, address, email, web site) (maybe via Google Maps API?);
If the contact exists, offer to alter; else offer to Add (need to ask me to which account if I have multiple)
If the field is missing, add it.
If the field differs, prompt me whether to (a) add (e.g., second phone #) (b) replace (have to ask which if more than one) (c) not change.

These could be on-event (e.g., after a call) or on-demand (when-run).