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Session Desktop - Onion routing based messenger [DEPRECATED SEE README]
Android keyboard for secure E2EE communication through the signal protocol in any messenger. Communicate securely and independent, regardless of the legal situation or whether messengers use E2EE
🧩 Lightweight, high-performance TypeScript library for the WhatsApp Web protocol, built for multi-session scale, low memory usage, zero-copy hot paths, and full control over auth, transport, Signal, app state, and media.
Signal protocol implementation for Node.js
A Swift implementation of the Signal Protocol
Hyperlocal is a free, open source, Bluetooth messaging app, built to ensure the privacy and safety of communication between those without internet access.
A Rust interface to the Signal Protocol. DEPRECATED in favour of https://github.com/signalapp/libsignal-client ! Signal reimplemented the whole thing in Rust.
Real-time Secure Chat Application with End-to-end Encryption
Encrypt right inside any messenger: the keyboard encrypts, the screen decrypts, no jumping between apps. iOS and Android, Signal Protocol, fully offline.
a brief guide on building a secure instant messaging app for Android
A Whatsapp client implementation in Elixir
A modern, privacy-respecting IRC client for Android
Short Message Secure (SMSecure) is a privacy-focused SMS application that lets you communicate securely with your contacts using encrypted text messages.
An end to end encrypted Messenger that uses the signal protocol over the I2P network
Signal Protocol compiled to WebAssembly for browser-based E2EE messaging
Reticulum <-> Signal Gateway, Bidirectional bridge between Reticulum (LXMF) and Signal supports images/files and voice memos.
WhatsApp in pure Rust. Single binary, 5 MB, 15 MB RAM. 54 API endpoints, 30 MCP tools, full protocol.
E2EE Signal protocol X3DH and Double Ratchet implementation
Offline-first disaster communication platform. End-to-end encrypted messaging, voice and video calls, and rescue coordination — over Bluetooth with zero infrastructure, and over the internet when a network is reachable. Available on Google Play and App Store.
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