Build privacy into your messaging
Tessera is an open-source privacy protocol for authenticated, metadata-private, one-to-one delivery. These use cases show how developers, enterprises, and institutions apply it in practice.
Secure Messaging
Build messaging apps that protect who talks to whom, not just message contents.
EnterpriseCompliant Communications
Meet GDPR, ePrivacy, and CCPA data-minimization duties by eliminating metadata exposure.
JournalismWhistleblowing
Authenticate sources cryptographically while keeping their identity hidden from the network.
HealthcareHealthcare Messaging
HIPAA-aligned safeguards for provider and patient messaging metadata.
Web3Decentralized Organizations
Notify DAO and cooperative members without exposing the notification graph.
AIAI Agent Identity
Verifiable agent identity with cross-service unlinkability and privacy-preserving operation.