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FreeOTP Authenticator

Experience lightweight, offline two-factor authentication from Red Hat. Protect your sensitive accounts with a transparent, privacy-focused tool designed for developers and security professionals who demand transparency and zero tracking.

Security & Privacy ›

Key Figures

Downloads

1M+

User Rating

2.7/5

Total Ratings

500

Publisher

Red Hat, Inc.

Hardened Security for Tech Professionals

A lightweight, open-source MFA solution designed for those who value privacy, transparency, and Red Hat's enterprise-grade reliability.

Audit-Ready Transparency

Apache 2.0 licensed source code ensures full visibility into your security architecture with zero hidden tracking or data collection.

True Offline Operation

Generate one-time passwords without cloud sync or network access. Your keys stay on your hardware, exactly where they belong.

FAQ

Frequently Asked Questions

Everything you need to know about FreeOTP Authenticator

What is FreeOTP Authenticator?

FreeOTP Authenticator provides a second layer of security for online accounts. It generates one-time passwords on mobile devices to combine with a normal password, making logins nearly impossible to hack.

How does FreeOTP generate one-time passwords?

FreeOTP generates one-time passwords on mobile devices using standardized TOTP or HOTP protocols. These unique codes enhance login security when used alongside a user's regular password.

Can FreeOTP generate passwords when offline?

Yes, FreeOTP can generate one-time passwords even when your mobile phone is in airplane mode. This ensures continuous access to your security codes without an active internet connection.

Which online services does FreeOTP Authenticator support?

FreeOTP supports popular services like Google, Facebook, Evernote, GitHub, Amazon, GitLab, Docker, and Slack. It also works with corporate security implementing standard TOTP or HOTP protocols, such as FreeIPA.

Is FreeOTP an open-source application?

Yes, FreeOTP is open source and free software. It is licensed under the Apache 2.0 license, and its source code is publicly available for review or modification.

Does FreeOTP support TOTP and HOTP protocols?

Yes, FreeOTP supports standardized TOTP (Time-based One-Time Password) and HOTP (HMAC-based One-Time Password) protocols. This compatibility extends its use to enterprise solutions like FreeIPA.

How much does FreeOTP Authenticator cost?

FreeOTP Authenticator is free software. The application is open source and available without any cost to the user, licensed under the Apache 2.0 license.

The following screenshots and description are sourced directly from the app's official store listing and are the property of the app developer.

App Store

Screenshots

FreeOTP Authenticator - FreeOTP Authenticator app screen displaying multiple accounts for two factor authentication including GitLab and GitHub — FreeOTP Authenticator app screen displaying multiple accounts for two factor authentication including GitLab and GitHub

FreeOTP Authenticator - FreeOTP app screen showing two-factor authentication codes for various services like GitHub and Slack — FreeOTP app screen showing two-factor authentication codes for various services like GitHub and Slack

Description

FreeOTP adds a second layer of security for your online accounts. This works by generating one-time passwords on your mobile devices which can be used in conjunction with your normal password to make your login nearly impossible to hack. These passwords can be generated even when your phone is in airplane mode. FreeOTP works with many of the great online services you already use, including Google, Facebook, Evernote, GitHub and many more! FreeOTP also may work for your private corporate security if they implement the standardized TOTP or HOTP protocols. This includes great enterprise solutions like FreeIPA. FreeOTP is open source and free software! Licensed under the Apache 2.0 license, you can obtain the source code for FreeOTP at https://fedorahosted.org/freeotp for review or modification. Contributions are welcome!