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2. Messenger (software) - Wikipedia

   en.wikipedia.org/wiki/Messenger_(software)

   Messenger, [11] also known as Facebook Messenger, is an American proprietary instant messaging service developed by Meta Platforms.Originally developed as Facebook Chat in 2008, the client application of Messenger is currently available on iOS and Android mobile platforms, Windows and macOS desktop platforms, through the Messenger.com web application, and on the standalone Facebook Portal ...

3. Comparison of cross-platform instant messaging clients

   en.wikipedia.org/wiki/Comparison_of_cross...

   Examples of such messaging services include: Skype, Facebook Messenger, Google Hangouts (subsequently Google Chat), Telegram, ICQ, Element, Slack, Discord, etc. Users have more options as usernames or email addresses can be used as user identifiers, besides phone numbers. Unlike the phone-based model, user accounts on a multi-device model are ...

4. Signal Protocol - Wikipedia

   en.wikipedia.org/wiki/Signal_Protocol

   Facebook Messenger also say they offer the protocol for optional Secret Conversations, as does Skype for its Private Conversations. The protocol combines the Double Ratchet Algorithm , prekeys, and a triple Elliptic-curve Diffie–Hellman (3-DH) handshake, [ 5 ] and uses Curve25519 , AES-256 , and HMAC-SHA256 as primitives .

5. List of Facebook features - Wikipedia

   en.wikipedia.org/wiki/List_of_Facebook_features

   In 2017, Facebook has added "Messenger Day", a feature that lets users share photos and videos in a story-format with all their friends with the content disappearing after 24 hours; [64] Reactions, which lets users tap and hold a message to add a reaction through an emoji; [65] and Mentions, which lets users in group conversations type @ to ...

6. Facebook - Wikipedia

   en.wikipedia.org/wiki/Facebook

   In 2017, Facebook added "Messenger Day", a feature that lets users share photos and videos in a story-format with all their friends with the content disappearing after 24 hours; [109] Reactions, which lets users tap and hold a message to add a reaction through an emoji; [110] and Mentions, which lets users in group conversations type @ to give ...

7. Portable Executable - Wikipedia

   en.wikipedia.org/wiki/Portable_Executable

   Over time, the PE format has grown with the Windows platform. Notable extensions include the .NET PE format for managed code, PE32+ for 64-bit address space support, and a specialized version for Windows CE. To determine whether a PE file is intended for 32-bit or 64-bit architectures, one can examine the Machine field in the IMAGE_FILE_HEADER. [6]

8. Session (software) - Wikipedia

   en.wikipedia.org/wiki/Session_(software)

   Session started as a fork of another messenger, Signal, aiming to build upon its foundation. However, concerns about the centralized structure of Signal Protocol and potential metadata collection led the team to deviate and create their own protocol, called "Session Protocol". This approach prioritized increased anonymity and decentralization.

9. Element (software) - Wikipedia

   en.wikipedia.org/wiki/Element_(software)

   Element (formerly Riot and Vector [11]) is a free and open-source software instant messaging client implementing the Matrix protocol. [12]Element supports end-to-end encryption, [13] private and public groups, sharing of files between users, voice and video calls, and other collaborative features with help of bots and widgets.