WhatsApp.

Official Website : whatsapp.com

WhatsApp Messenger is a proprietary, cross-platform, encrypted instant messaging client for smartphones. It uses the Internet to make voice calls, video calls, send text messages, documents, PDF files, images, GIF, videos, user location, audio files, phone contacts and voice notes to other users using standard cellular mobile numbers. As of February 2016, WhatsApp had a user base of one billion, making it the most popular messaging application. WhatsApp Inc., based in Mountain View, California, was acquired by Facebook Inc. on February 19, 2014, for approximately US$19.3 billion.


Founded : February 24, 2009 
Headquarters : Mountain View, California, United States. 
Founders: Jan Koum and Brian Acton. 
CEO: Jan Koum.
Parent: Facebook.

Jan Koum: Jan Koum is a Ukrainian-American internet inventor and computer programmer. He is the CEO and co-founder of WhatsApp.

Born: February 24, 1976, Kiev, Ukraine

Nationality: American

Net worth: 8.3 billion USD (2016) Forbes

Education: San Jose State University (1994–1997)

Home town: Fastiv.

 

 

Brian Acton: Brian Acton is an American computer programmer and Internet entrepreneur. He is the co-founder of WhatsApp. He was formerly employed at Yahoo Inc.

Born: February 17, 1972 , Michigan, United States

Nationality: American

Net worth: 4.9 billion USD (2016) Forbes

Alma mater: Stanford University

Residence: California, United States

Source: Internet.