PQ · ML-KEM-768 · ML-DSA-65

Encrypted from physics up.

End-to-end by default. Post-quantum in production. Your conversations stay on your device — by architecture, not by promise.

End-to-end encrypted by default

X3DH + Double Ratchet (Signal-class) on every conversation. No flag to flip, no upgrade tier.

Post-quantum cryptography in production

Saj Protocol V2 using ml-dsa (Dilithium). Live today — your messages survive the quantum-computing transition.

Conversations stay on your device

Server holds encrypted blobs only. No plaintext ever leaves your device unless you choose to share.

Selective Disclosure

Reveal only the part of your message that matters. Cryptographic proof without full disclosure.

No phone number required

Sign up with email, hardware key, or anonymously. Your identity is your choice.

k-Anonymous contact discovery

Find contacts via SHA-256 prefixes. The server never sees your address book.

Self-hostable on enterprise tier

Run the entire Saj Link stack inside your VPC. Federation across self-hosted instances.

Audit logging mapped to SOC 2 + ISO 27001

30 audit-action types. GDPR data export and right-to-erasure built-in.

Sovereign by architecture.

Free for individuals. Self-hostable for organisations.