WhatsApp

WhatsApp is the secure, end-to-end encrypted instant messaging and VoIP platform connecting over 3 billion monthly active users globally.

WhatsApp Messenger, a Meta Platforms property, operates as a cross-platform instant messaging (IM) and Voice over IP (VoIP) service. The application requires only a cellular mobile number for registration, enabling users to send text, voice, and video messages, plus make voice and video calls (desktop and mobile). Launched in May 2009, the service scaled rapidly: it hit 3 billion monthly active users as of May 2025, solidifying its position as the world's most-used messenger app. Facebook (now Meta) acquired WhatsApp Inc. in February 2014 for approximately US$19.3 billion, integrating its massive global reach into the Meta ecosystem.

https://www.whatsapp.com/