Open Source 2FAS Alternatives

Aegis is an Android authenticator app built for people who want full control over their 2FA tokens without handing them off to a cloud service they don't own. No ads, no unnecessary permissions, no lock-in to a phone number or SIM card. It works entirely offline.

The vault is encrypted by default. You choose the password, and optional biometric unlock (fingerprint or face) makes day-to-day access quick without sacrificing security. The app requests only three permissions, a sharp contrast to many alternatives that ask for far more than they need.

Key capabilities:

• Encrypted vault with password protection and optional biometric unlock
• Flexible backups that you control, saved wherever you want, with automatic backup prompts and optional password encryption on the backup file itself
• Import and export from Google Authenticator, Authy, Microsoft Authenticator, andOTP, FreeOTP+, and others. On rooted devices, it can pull data directly from other installed authenticators
• Multiple TOTP algorithms beyond the SHA1 baseline that many apps limit you to
• Customizable interface with Material You support, true dark mode, tiles view, and icon packs to help you find tokens quickly

Migrating from another authenticator is straightforward. If you've ever been stuck on a phone upgrade because Google Authenticator wouldn't recognize its own QR code, Aegis handles that transition without friction.

Aegis has over 675,000 installs and is actively maintained.