KeeperChat is described as '- The leading secure messaging app' and is a instant messenger in the social & communications category. There are more than 100 alternatives to KeeperChat for a variety of platforms, including Android, iPhone, Windows, Mac and Linux apps. The best KeeperChat alternative is Signal, which is both free and Open Source. Other great apps like KeeperChat are Telegram, Element, Matrix and Tox.
KakaoTalk is a phone number based messenger service that allows users anywhere in the world to chat one-to-one or in a group for free. (no SMS service)
Encryption plugin for Pidgin, providing up to 4096 bit RSA encryption using the NSS crypto library from Mozilla. Keys are automatically transmitted and stored, making it very easy to use, but also resistant to man-in-the-middle attacks.
Safe, Fast And Decentralized Messenger.
Zangi Private Messenger is a decentralized messaging app with a focus on security and low data usage.
Emoty is a messaging application with emphasis on simplicity, freedom and safety. It's a client for RetroShare network, hence use the same decentralized, Friend-to-Friend network structure with end-to-end encryprtion.
CoyIM is a new chat client that is safe and secure by default: no settings to change, no plugins to install, no computer configuration to change.
SNote allows securely sharing private information by creating an encrypted text note with a one-time link that will self-destruct after being read by the recipient.
SureSpot is an open source encrypted messenger designed to make encrypted messaging simple and accessible to anyone.
Messenger Kids is a free video calling and messaging app designed for kids to connect with close friends and family from their tablet or smartphone. Kids can only connect with parent-approved contacts, which creates a more controlled environment.
SafeSwiss The world’s most effective end to end encryption security solution including P2P Voice, encrypted email, encrypted storage, ephemeral text chat, docs share & group chat for mobile phone devices and PC's.
Toxic is a client with an ncurses interface, written entirely in C. It has support for all basic features, as well as 1-on-1 audio/video chats, and is capable of working on bare-bones systems that lack graphical interfaces.
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