Contacts Management Software

Hi all, I have a quick question. My boss asked me to find the best contacts management software on the market. What we are looking for is you go to your public folder and select the option to update contacts, This in turn will mail everybody in your folder asking them if their contact info is correct, if not they change it and it automatically updates then in your public folder.

Ps: my boss does not like plaxo so please help!
..G