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2. WhatsApp - Wikipedia

   en.wikipedia.org/wiki/WhatsApp

   WhatsApp (officially WhatsApp Messenger) is an instant messaging (IM) and voice-over-IP (VoIP) service owned by technology conglomerate Meta. [14] It allows users to send text, voice messages and video messages, [15] make voice and video calls, and share images, documents, user locations, and other content. [16] [17] WhatsApp's client application runs on mobile devices, and can be accessed ...

3. Timeline of WhatsApp - Wikipedia

   en.wikipedia.org/wiki/Timeline_of_WhatsApp

   Timeline of WhatsApp. The following is a timeline of WhatsApp, a proprietary cross-platform, encrypted, instant messaging client for smartphones. [1] Jan Koum incorporates WhatsApp in USA. [2] WhatsApp 2.0 is released on the App Store for the iPhone. [3]

4. Instant messaging - Wikipedia

   en.wikipedia.org/wiki/Instant_messaging

   Instant messaging ( IM) technology is a type of online chat allowing immediate transmission of messages over the Internet or another computer network. Messages are typically transmitted between two or more parties, when each user inputs text and triggers a transmission to the recipient (s), who are all connected on a common network. [1] It differs from email in that conversations over instant ...

5. WhatsApp could soon show you who is online now to ... - AOL

   www.aol.com/news/whatsapp-could-soon-show-online...

   WhatsApp has long shown “online” and “last seen” information at the top of a chat bar, which allows people to see when others are currently in the app or when they last opened it.

6. Signal Protocol - Wikipedia

   en.wikipedia.org/wiki/Signal_Protocol

   The Signal Protocol (formerly known as the TextSecure Protocol) is a non- federated cryptographic protocol that provides end-to-end encryption for voice and instant messaging conversations. [2] The protocol was developed by Open Whisper Systems in 2013 [2] and was introduced in the open-source TextSecure app, which later became Signal. Several closed-source applications have implemented the ...

7. Jan Koum - Wikipedia

   en.wikipedia.org/wiki/Jan_Koum

   Jan Koum ( Ukrainian: Ян Кум; born Yan Borysovych Kum, Ukrainian: Ян Борисович Кум, on February 24, 1976 [1]) is a Ukrainian-American billionaire businessman and computer programmer. He is the co-founder and former CEO of WhatsApp, a mobile messaging app which was acquired by Facebook in 2014 for US$19.3 billion. According to Forbes, he has an estimated net worth of US$15.2 ...