SECURE MESSENGER
Signal
Version: 7.16.0 Web: https://signal.org
In addition to exchanging text messages, you can also make voice and video calls from Signal’s desktop app.
Despite being a centrally controlled and managed messaging app, Signal is the apple of privacy enthusiasts’ eye due to its strong encryption. You can use Signal for one-to-one and group chats, voice and video calls, and file transfers, all of which happen over end-to-end encrypted channels.