Audience

Anyone who wants a private, open source, cross-device two-factor authentication app that secures logins with time-based one-time codes

About Proton Authenticator

Proton Authenticator is a privacy-first two-factor authentication app that generates time-based one-time passwords to add an extra layer of login security for online accounts beyond just a password, so users can secure accounts across all their devices. It is open source and uses end-to-end encryption, meaning all cryptographic operations and secret keys are generated and stored locally, and even Proton cannot see your unencrypted 2FA data, offering transparency and strong privacy by design. Users can sync 2FA codes across devices with encrypted backups (including via iCloud or a Proton Account), import existing codes from other authenticator apps, and export them if needed, giving flexibility and control over 2FA secrets without vendor lock-in. Proton Authenticator is free to use, has no ads or tracking, and supports secure practices like biometric locks and offline access, so users can generate login codes.

Pricing

Starting Price:
Free
Free Version:
Free Version available.

Integrations

Ratings/Reviews

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Company Information

Proton
Founded: 2014
Switzerland
proton.me/authenticator

Videos and Screen Captures

Proton Authenticator Screenshot 1
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Product Details

Platforms Supported
Windows
Mac
Linux
iPhone
iPad
Android
Training
Documentation
Live Online
Videos
Support
Online

Proton Authenticator Frequently Asked Questions

Q: What kinds of users and organization types does Proton Authenticator work with?
Q: What languages does Proton Authenticator support in their product?
Q: What kind of support options does Proton Authenticator offer?
Q: Does Proton Authenticator have a mobile app?
Q: What type of training does Proton Authenticator provide?
Q: How much does Proton Authenticator cost?

Proton Authenticator Product Features

Authentication

Single Sign On Not Supported
Self Service Portal Not Supported
Policy Management Not Supported
Out-of-Band Authentication Not Supported
Mobile Authentication Not Supported
Social Sign On Not Supported
Multifactor Authentication Not Supported
Knowledge-Based Authentication Not Supported
Credential Management Not Supported
Biometric Not Supported