WhatsApp - Wikipedia
From Wikipedia, the free encyclopedia Messaging and VoIP service owned by Meta WhatsApp Messenger Original authors Brian Acton , Jan Koum Developers Meta Platforms , Will Cathcart Head of WhatsApp 1 2 Initial release May 3, 2009 ; 17 years ago 2009-05-03 Stable release s ± iOS 26.10.74 3 / March 20… …