RedMutex Authenticator
A fast, private, open-source TOTP authenticator for your desktop. Paste a QR code, scan with your camera, or type a setup key — then copy codes with one click.
Free & open source · View source on GitHub →
Paste QR Image
Copy a QR code from your browser and press ⌘V — detected instantly, no camera needed.
Camera Scan
Point your webcam at any TOTP QR code to add it instantly, just like a phone authenticator.
Encrypted Storage
All secrets are encrypted at rest using AES-256-GCM with a machine-derived key. Nothing leaves your device.
Instant Copy
Click any code to copy it. Countdown rings show the seconds remaining per account.
Truly Cross-Platform
One app — native installers for macOS (Apple Silicon & Intel), Windows, and Linux.
Open Source
MIT licensed. Read the code, audit it, fork it. No telemetry, no accounts, no subscriptions.