Outlook Duplicate Items Remover (ODIR)

“Free, Fast and easy tool for removing duplicate items from Outlook folders 
 With ODIR it’s a snap to clean your Outlook folders by removing all duplicates. ODIR removes duplicates from Contacts; Calendar; Tasks; Notes and Email folders." 
 
 http://www.vaita.com/ ODIR .asp 
 Microsoft’s perspective: 
 
 How to remove duplicate imported items in Outlook (kb299349) 	 http://support.microsoft.com/kb/299349