Open-source alternatives to Signal

Command-line client for the Signal messenger. — signal-cli provides an unofficial commandline, JSON-RPC and dbus interface for the Signal messenger.

↔ alternative to Signal

Encrypted P2P chat, voice and video client using Tox — qTox is a chat, voice, video, and file transfer IM client using the encrypted peer-to-peer Tox protocol.

↔ alternative to Signal

A hardened, privacy-focused fork of the Signal app for Android. — Enhanced and security-focused fork of Signal.

↔ alternative to Signal

The cutest Matrix instant messenger — The cutest instant messenger in the [matrix]

↔ alternative to Telegram、Signal

End-to-end encrypted messaging app — :wavy_dash: Overview of the open source code for Wire

↔ alternative to Signal

Decentralized email-based messenger for Android. — Decentralized private messenger with chat-shared tools and games for Android

↔ alternative to Signal

Signal Messenger client for the terminal. — Signal Messenger client for terminal

↔ alternative to Signal

End-to-end encrypted web messenger — Wire for Web

↔ alternative to Signal

End-to-end encrypted SMS and MMS app. — PROJECT MOVED: https://git.silence.dev/Silence/Silence-Android/ (GitHub is just a mirror.)

↔ alternative to Signal

End-to-end encrypted messaging app. — Threema App for Android.

↔ alternative to Signal