WhatsApp Messenger, or simply WhatsApp, is an American freeware, cross-platform messaging and Voice over IP service owned by Facebook, Inc. It allows users to send text messages and voice messages, makes voice and video calls, and share images, documents, user locations, and other media.
Initial release date: 3 May 2009
Android: Varies with device / November 10, 2020; 19 days ago
Windows: 2.2043.21 / November 1, 2020; 28 days ago
Developer: WhatsApp, Facebook
Programming language: Erlang