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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.

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.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported

Platforms Supported

Windows Supported
Mac Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Supported
iPad Supported
Android Supported
Chromebook Not Supported

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

Audience

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

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

Free
Free Version Supported
Free Trial Not Supported

Pricing

Free
Free Version Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Not Supported
Live Online Supported
In Person Not Supported

Company Information

2FAS
Founded: 2015
United States
2fas.com

Company Information

Proton
Founded: 2014
Switzerland
proton.me/authenticator

Alternatives

Zunoy Authenticator

Zunoy Authenticator

Mentcube Innovations Pvt Ltd

Alternatives

Aegis Authenticator

Aegis Authenticator

Beem Development
Aegis Authenticator

Aegis Authenticator

Beem Development
Proton Meet

Proton Meet

Proton
Proton Pass

Proton Pass

Proton AG

Categories

Authentication Supported

Categories

Authentication Supported

Integrations

2FAS Pass Supported
Brave Browser Supported
Eurekos Supported
Google Chrome Supported
Microsoft Edge Supported
Mozilla Firefox Supported
Opera Supported
Safari Supported
iCloud Not Supported

Integrations

2FAS Pass Not Supported
Brave Browser Not Supported
Eurekos Not Supported
Google Chrome Not Supported
Microsoft Edge Not Supported
Mozilla Firefox Not Supported
Opera Not Supported
Safari Not Supported
iCloud Supported
Claim 2FAS Auth and update features and information
Claim 2FAS Auth and update features and information
Claim Proton Authenticator and update features and information
Claim Proton Authenticator and update features and information