facebook friends

Menubar item provides Growl notifications of Facebook events.

Sync your Facebook Events with iCal.

Download Facebook profile pictures to Address Book cards.

Chat with friends anytime, anywhere.

Write secret messages to your friends.

Nimbuzz for Mac lets you call, chat and interact with your friends.

An Xbox Live client that can check what are your Xbox friends doing

Just use the Note Sationery Pack for Mail and send fun emails to your friends

View your Xbox Live friends list on your mac.

Race around Mars playing laser tag with friends on the net.