WhatsApp Messenger is a cross-platform instant
messaging application that allows iPhone, BlackBerry, Android, Windows Phone and
users to exchange text, image, video
and audio messages for free.
WhatsApp is especially popular with end users who do not have unlimited text messaging. In
addition to basic messaging, WhatsApp provides group
chat and location sharing options.
Technically speaking, WhatsApp uses a customized version of the open standard Extensible Messaging and Presence
Protocol (XMPP). WhatsApp Inc. was founded in 2009 by Brian Acton and Jan Koum, both veterans
Contributor(s): Emily McLaughlin
This was last updated in June 2013
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