The client application was created by WhatsApp Inc. з Mountain View, Каліфорнія, яка була прийнята до Facebook в February 2014 для порівняння US$19.3 billion. It became the world's most popular messaging application by 2015, and had more than 2 billion users worldwide by February 2020.
Will Cathcart (Mar 2019–)WhatsApp / CEO
Jan KoumBrian Acton WhatsApp/Founders