Pidgin-Encryption is described as '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' and is an app in the Social & Communications category. There are more than 25 alternatives to Pidgin-Encryption for a variety of platforms, including Android, iPhone, Windows, Linux and Mac. The best alternative is Signal, which is both free and Open Source. Other great apps like Pidgin-Encryption are Element (Free Personal, Open Source), Tox (Free, Open Source), Jami (Free, Open Source) and ChatSecure (Free, Open Source).
VIPole is a Secure Instant Messenger for secure messaging, encrypted voice/video calls, group chats that provides highly secure and strongly encrypted environment for all your communications and files you exchange over internet.
Reclaim your privacy With Uup. Just download the app and start chatting. Uup App is based on asymmetric encryption. Private key is generated based on the device and it doesn't need any email, mobile number or anything else to work.
Conduit is a simple, fast and reliable chat server powered by Matrix. Conduit is an alternative to Synapse and tries to be lightweight and easy to install, but it is still in development. What is Matrix?