CTT - Messenger Contact List - is a file extension used by the MSN/Live Messenger, which is a program that supports instant messaging. This file keeps track of contacts and the groups of contacts set forth by the user. It is saved as a text file and can be exported by MSN Messenger to another user. The CTT contact list can be imported to the MSN Messenger by choosing File then Import Contacts from a saved File.
File Extension CTT
Product(s) that can open CTT file
Windows Live Messenger
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