Instant Messaging Client (Paperback)

High Quality Content by WIKIPEDIA articles! An instant messaging client is a software application that enables the user to engage in instant messaging. Instant messaging clients utilize one or more instant messaging protocols. Popular protocols include OSCAR (AIM, ICQ), XMPP, IRC, MSNP (Windows Live Messenger), and Skype. Many popular instant messaging clients also include Voice over Internet Protocol (VOIP) and videoconferencing capabilities.