Cost / License
- Free
- Open Source (BSD-3-Clause)
Platforms
- Linux
- Go (Programming Language)
Proton Authenticator is described as 'Protect your accounts with Proton Authenticator, a private and secure cross-device two-factor authentication (2FA) that works offline. Created by Proton, the creators of Proton Mail, Proton VPN, Proton Drive, and Proton Pass' and is a popular Authenticator in the security & privacy category. There are more than 50 alternatives to Proton Authenticator for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Windows apps. The best Proton Authenticator alternative is Bitwarden, which is both free and Open Source. Other great apps like Proton Authenticator are KeePassXC, KeePass, Aegis Authenticator and Ente Auth.
Etopa is a two-factor-authentication app, which runs as a web server and can be accessed using a web browser or using an Android app. You can use the Etopa.de instance or host your own.




Authenticator generates secure 2 step verification tokens on your device. It help’s you protect your accounts even more.




MFAuth is a free and secure application that offers 2-step verification for managing your online accounts and services, thus helping to protect your accounts from hackers.




CarryPass is a privacy-first password manager that runs entirely in your browser as a Progressive Web App (PWA). It uses deterministic password generation (Argon2 + PBKDF2 + AES-CTR) and AES-GCM encryption for vaults.




Authenticator is a simple, free, and open source two-factor authentication app. It helps keep your online accounts secure by generating unique one-time passwords, which you use in combination with your other passwords to log into supporting websites.



Password Secure is a cross-platform, offline password manager, using strong AES-256 encryption.


Chronos is an open-source two-factor authentication (2FA) app designed to deliver robust security and reliable backup features. It supports both time-based (TOTP) and counter-based (HOTP) authentication methods.




Infomaniak Auth is a free mobile application that improves and simplifies the security of Infomaniak accounts protected by two-factor authentication.




Download TU Latch, a second factor authentication (2FA) and authorisation (2FAuth) app that provides additional protection for your digital services with authorisation controls, TOTP access control and web browsing security from your computer.




Hermes offers a straightforward solution for overseeing two-factor authentication accounts (SHA1), providing support for a wide range of platforms, including Gmail, Dropbox, and thousands of other websites.
