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Two-Factor (2FA) Authenticators
Network Pro Strategies (Network Pro™)
Last Updated: November 19, 2025
Two-Factor Authentication (2FA) apps add a vital layer of security by requiring a second form of verification, protecting against phishing and account compromise. This section features free and open-source authenticators that respect user privacy, operate offline, and offer transparent, audit-friendly code—ensuring strong security without relying on closed systems or third parties.
Legend
| Emoji | Meaning |
|---|---|
| 👑 | Privacy Community Favorite |
| ❤️ | Top Recommendation |
| ⭐ | Highly Recommended |
| ❤ | Personal Favorite |
| 💲 | Paid App or Service |
| 🌎 | Community-maintained |
Backup / Recovery
Be sure to have a plan in case you lose access to your 2FA codes!
You should have backup/recovery codes stored securely for use in such an event.
Online Apps
Ente Auth F-Droid | GitHub 🇮🇳 IN 👑 ⭐ ❤️ ❤
- A cross platform TOTP app with secure E2EE syncing on all major operating systems.
- While Ente is an Indian company, its infrastructure is hosted in Germany and complies with the EU GDPR.
Proton Auth Play Store | GitHub 🇨🇭 CH
- A cross platform TOTP app with secure E2EE syncing on all major operating systems.
Offline Apps
Aegis Authenticator F-Droid | GitHub 🌎 👑 ⭐
- Aegis is one of the most polished & simple TOTP services for Android.
YubiKey F-Droid | Play Store | GitHub 🇸🇪 SE 👑 ⭐
- YubiKey is one of the most polished and trusted U2F solutions.