Guardyn

Guardyn is a secure end-to-end encrypted messenger implementing the Signal Protocol. Our platform ensures privacy and security through a fully self-hosted architecture with custom authentication and distributed database layer. Key Features: • End-to-End Encryption (Signal Protocol) • Cross-platform Flutter application • Self-hosted backend for full control • Support for text, media, and voice calls • Security audit ready Built for developers, companies, and individuals who prioritize data security and privacy in their communications. Tech Stack: Go microservices, PostgreSQL, ScyllaDB, Redis, MinIO, Flutter client with WebRTC integration.