2FAS Auth2FAS
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Proton AuthenticatorProton
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Related Products
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About
2FAS is a two-factor authentication and password management platform centered on its open-source 2FAS Authenticator app, which helps users add a strong second layer of login security to online accounts by generating time-based and event-based one-time codes that refresh frequently to defend against unauthorized access, making it easier to secure email, social, financial, and other services that support 2FA. It is designed to be simple, private, and secure, it works offline, does not store passwords or usage metadata, and doesn’t require users to create an account, offering anonymous use while still syncing codes across multiple mobile devices with encrypted backup options, biometric or PIN protection, and support for importing and exporting authentication seeds so you retain control of your data and can migrate between devices or apps.
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About
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.
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Platforms Supported
Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook
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Audience
Individuals who want a free, secure, privacy-focused two-factor authentication app to protect online accounts with time-based login codes without tracking, ads, or centralized accounts
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Audience
Anyone who wants a private, open source, cross-device two-factor authentication app that secures logins with time-based one-time codes
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Support
Phone Support
24/7 Live Support
Online
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Support
Phone Support
24/7 Live Support
Online
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API
Offers API
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API
Offers API
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Screenshots and Videos |
Screenshots and Videos |
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Pricing
Free
Free Version
Free Trial
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Pricing
Free
Free Version
Free Trial
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Reviews/
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Reviews/
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Training
Documentation
Webinars
Live Online
In Person
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Training
Documentation
Webinars
Live Online
In Person
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Company Information2FAS
Founded: 2015
United States
2fas.com
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Company InformationProton
Founded: 2014
Switzerland
proton.me/authenticator
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
2FAS Pass
Brave Browser
Google Chrome
Microsoft Edge
Mozilla Firefox
Opera
Safari
iCloud
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Integrations
2FAS Pass
Brave Browser
Google Chrome
Microsoft Edge
Mozilla Firefox
Opera
Safari
iCloud
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