WhatsApp is an instant messaging and voice-over-IP service owned by technology conglomerate Meta. It allows users to send text, voice messages and video messages, make voice and video calls,... Wikipedia

  • Original author(s):  Brian Acton, Jan Koum
  • Developer(s):  Meta Platforms, Will Cathcart (Head of WhatsApp)
  • Written in:  Erlang
  • Operating system:  Android, iOS, iPadOS, KaiOS, macOS, Windows, Windows Phone, Wear OS, Web, Meta Quest (The latter two require one-time verification from the mobile app client.)
  • Size:  183.7 MB (iOS), 78.6 MB (Android)
  • Available in:  40 (iOS) and 60 (Android) languages
  • Type:  Instant messaging, VoIP
  • License:  Proprietary software with EULA, "European Region", "others"
  • Data source:  DuckDuckGo