QryptChat - Quantum-Resistant Encrypted Messaging
End-to-end encrypted messaging with post-quantum cryptography (ML-KEM-1024 / CRYSTALS-Kyber and CRYSTALS-Dilithium). Open source, self-hostable, and accessible over Tor.
End-to-end encrypted messaging with post-quantum cryptography (ML-KEM-1024 / CRYSTALS-Kyber and CRYSTALS-Dilithium). Open source, self-hostable, and accessible over Tor.
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QryptChat is free and open source. See what is included for free and what is coming to QryptChat Premium.
End-to-end encrypted messaging with post-quantum cryptography (ML-KEM-1024 / CRYSTALS-Kyber and CRYSTALS-Dilithium). Open source, self-hostable, and accessible over Tor.
How QryptChat protects your messages: ML-KEM-1024 (CRYSTALS-Kyber) key encapsulation, CRYSTALS-Dilithium signatures, on-device keys, a zero-knowledge architecture, Tor access, and responsible disclosure.
Frequently asked questions about QryptChat: is it free, what platforms it runs on, how post-quantum encryption works, whether you can self-host, and how it compares to Signal.
QryptChat warrant canary — our transparency statement regarding government data requests and gag orders.