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

The WhatsApp API

Automatic compilation of native libraries for the Signal messenger

Client lib for libsignal-protocol-c. Implements the necessary interfaces using gcrypt and SQLite.

Cross-platform BEAM (Erlang/Elixir/Gleam) implementations of the Signal Protocol

Erlang NIF binding for libsignal-protocol-c

Wrapper for libsignal, implementing the Signal Protocol for end-to-end encryption. Features Double Ratchet, X3DH, Sealed Sender, Group Messaging (SenderKey), and Kyber post-quantum key exchange. Optimized for Flutter and cross-platform applications (Android, iOS, Linux, macOS, Windows). AGPL-3.0 Licensed.

Modern TypeScript implementation of the Signal Protocol for Node.js

The session and cipher for groups, based on libsignal-protocol-javascript.

A safe instant messenger/social media app with end-to-end encryption

🗝️ Signal Protocol for React Native 🛠️🚨— in development

Go variant of https://github.com/signalapp/curve25519-java

Lightweight Signal CLI in Rust with MCP support