WhatsApp is a Centralized Messaging Service for Smartphones Owned by Facebook

WhatsApp is an American Freeware Proprietary, Cross-Platform Centralized Messaging Service for Smartphones Owned by Facebook Inc.

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Founders: Brian Acton, Jan Koum

Developer(s): WhatsApp LLC (Facebook, Inc.)

Founded date: January 2009

Written in: Erlang

 Revenue: $5 billion (estimated)

Headquarters Regions:  San Francisco Bay Area, Silicon Valley, West Coast

WhatsApp Messenger is a cross-platform mobile messaging app that allows users to exchange messages without having to pay for SMS. WhatsApp Messenger is available for iPhone, Blackberry, Android, and Windows Phone. Since WhatsApp Messenger uses the same internet data plan that subscribers use for email and web browsing, there is no cost to message and allows them to stay in touch with their friends. In addition to basic messaging WhatsApp users can create groups, send each other unlimited images, video, and audio media messages.

WhatsApp started as an alternative to SMS.  It now supports sending and receiving a variety of media: text, photos, videos, documents, and location, as well as voice calls. Some of your most personal moments are shared with WhatsApp, which is why it is built end-to-end encryption in the app. The primary purpose of Whatsapp to let people communicate anywhere in the world without barriers.

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