Apps similar to Berty include Signal, which is free and open source. Other options are Matrix, Stoat Chat, Tox and bitchat. You're spoiled for choice with Instant Messengers like Berty: we list more than 50 alternatives for Linux, Android, Mac, Windows and iPhone.
Selene is a comprehensive peer-to-peer chat and file sharing application built on the Tor network. It enables secure, private communication and seamless file transfers between users, leveraging the anonymity and resilience of Tor.
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jami-commander (jc for short) is a simple but convenient CLI-based Jami client app for setting up accounts and swarms as well as sending.
Tinfoil Chat (TFC) is a FOSS+FHD peer-to-peer messaging system that relies on high assurance hardware architecture to protect users from passive collection, MITM attacks and most importantly, remote key exfiltration.
Zerion is a secure messaging app and encrypted vault designed for people who need private, anonymous, censorship-resistant communication.
Utopia P2P Ecosystem. Utopia is a feature-rich platform that is specifically designed to protect privacy of communication, confidentiality, and security of personal data. Utopia is a decentralized network, with no central server involved in data transmission or storage.
Iceland
This project won the first prize 🥇 at Telegram Lightweight Client Contest and now is an official Telegram client available to anyone at web.telegram.org/a.
signal-cli is a commandline interface for the Signal messenger. It supports registering, verifying, sending and receiving messages. signal-cli uses a patched libsignal-service-java, extracted from the Signal-Android source code.
Smoke Messenger is an open-source Instant Messenger that is known as the first mobile Messenger worlwide using the encryption algorithm McEliece. To be downloaded at F-Droid.org or Github.com. Smoke provides with its own Server-Software: SmokeStack-Echo-Server.
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