Download Canium
Install the desktop app for Windows or Linux, or use Canium in your browser.
Platforms
Every message, call, and file is encrypted on your device before it leaves. Canium never holds the keys and never sees your password.
Channels and calls use post-quantum key exchange, so traffic captured today cannot be decrypted by a future quantum computer.
The web app runs the same encryption core as the desktop app, compiled to WebAssembly. One implementation, both places.
Runs in Chrome, Edge, Firefox, and Safari. For everyday use, install the desktop app — a macOS build is in progress.
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How It Works →
MLS, OPAQUE, and post-quantum key establishment, end to end.
Security →
Threat model, standards, and what the server never sees.