Proton Authenticator

Proton Authenticator is a privacy-focused two-factor authentication app that generates secure 6-digit codes for your online accounts. Built by the team behind Proton Mail, this open source authenticator prioritizes your security and privacy above all else.

Key features include:

• Cross-platform availability - Works on Android, iOS, Windows, Mac, and Linux
• Encrypted sync - Securely sync your 2FA codes across all devices with end-to-end encryption
• Easy import/export - Import codes from Google Authenticator, 2FAS, Aegis, Bitwarden, and other popular apps
• No ads or tracking - Completely free with no data collection or advertisements
• Offline functionality - Generate codes even without internet connection
• Biometric security - Lock the app with fingerprint, face recognition, or PIN

Unlike other authenticators that lock you into Big Tech ecosystems, Proton Authenticator gives you complete control over your 2FA codes. You can use it without creating an account, or sign in to enable secure backup and sync features. The app supports both QR code scanning and manual key entry for easy setup.

Swiss-based and trusted by over 100 million users worldwide, Proton Authenticator represents a new standard for authentication apps where your privacy isn't compromised for convenience.