Aegis Authenticator
Aegis is an Android app with a password-protected encrypted vault, optional biometric unlock, flexible backups, and import and export from major 2FA apps. It works offline and is Android only.
Alternatives / Authy
2 open-source alternatives
2 Best Open Source Authy Alternatives in 2026
Looking for an open source Authy alternative? We compared 2 open source authenticator apps by license, platforms, and backups. Aegis is Android only, and 2FAS is mobile-first with a browser extension.
Written by Maxime DERAME
Last updated:
Best Authy alternatives at a glance
| Alternative | Best for | License |
|---|---|---|
| Aegis Authenticator | Encrypted vault for Android | GPL-3.0 |
| 2FAS | Local-first mobile authenticator | GPL-3.0 (Auth) / BUSL-1.1 (Pass) |
How we chose these Authy alternatives
We looked for open-source authenticators that store 2FA tokens securely. We verified each project's license, recent activity, stars, and platforms in its repository. See our methodology for the full criteria.
2FAS
2FAS keeps data on your device by default, needs no account, and has a browser extension, a public cryptography white paper, and Apple Watch support. It is mobile-first and relies on optional cloud sync or manual exports for backup.
Important: licenses
2FAS Auth is GPL-3.0, while its Pass product is under the Business Source License 1.1.
License details
Aegis is GPL-3.0.
Maintenance status
Both are actively maintained.
Why look for a Authy alternative?
Authy is a proprietary app from Twilio that has dropped its desktop apps. Open-source authenticators keep tokens on your device with backups you control.
getaegis.app
Aegis Authenticator is a GPL-3.0 Android app for two-factor authentication tokens with encrypted storage, optional biometric unlock, flexible backups you control, and import and export from other authenticators. It works offline and has no ads, but it runs only on Android.
13.4K608GPL-3.0Android app
Pricing: Free and open source.
- Encrypted vault with backups you control
- Imports from major 2FA apps
- Works offline
- Android only
- No built-in cloud sync
2fas.com
2FAS is a suite with 2FAS Authenticator, a TOTP two-factor token manager for Android, iOS, and browsers under GPL-3.0, and 2FAS Pass, a password manager with local storage and zero-knowledge encryption that is licensed under the Business Source License 1.1 with an end user license agreement. Neither requires an account, and both work offline.
1.5K131GPL-3.0 (Auth) / BUSL-1.1 (Pass)Local-first apps
Pricing: Free.
- No account required and works offline
- Open-source GPL-3.0 authenticator with a large community
- Apps for Android and iOS and browser extensions
- 2FAS Pass is source available, not open source
- Younger password manager than Bitwarden or KeePassXC
Compare Authy alternatives
| Alternative | Type | License | Platforms | Best for |
|---|---|---|---|---|
| Aegis Authenticator | Authenticator | GPL-3.0 | Android | Android users |
| 2FAS | Authenticator | GPL-3.0 (Auth) / BUSL-1.1 (Pass) | iOS, Android | Cross-platform phones |
Which one should you choose?
Use Android
Aegis has encrypted backups you control and imports from other apps.
Use iPhone or both
2FAS works offline with no account and has a browser extension.