Cortege 

Cortege is an accessory for Microsoft Outlook or Outlook Express that enables you to transform your address book into a graphical model of your network. This model incorporates features that help you evaluate, track and manage your relationships.
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Huminity 

All the Internet's social forces interconnected under one roof! Personal Blogs, my group Blogs, social networking, path search to other people, chat and Instant Messaging, be notified when someone is geographically near you and much more!
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