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.




LastPass Authenticator is described as 'Offers a unique one-tap password verification experience that no other authenticator app delivers' and is a Authenticator in the security & privacy category. There are more than 50 alternatives to LastPass Authenticator for a variety of platforms, including Android, iPhone, iPad, Android Tablet and Mac apps. The best LastPass Authenticator alternative is Bitwarden, which is both free and Open Source. Other great apps like LastPass Authenticator are Aegis Authenticator, Proton Authenticator, Ente Auth and Bitwarden Authenticator.
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.




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.




Allthenticator unifies digital and physical access with one smartphone-based identity. Users log in to systems and unlock doors via proximity. Supports SSH keys, passkeys, OTP, and peer-based recovery—all managed from a single admin dashboard.




Clockode is a minimal, and offline-only TOTP code generator that stores your authentication secrets in an encrypted local vault, keeping your two-factor codes private and accessible without needing an internet connection.



Duo Mobile works with Duo Security's two-factor authentication service to make logins more secure. The application generates passcodes for login and can receive push notifications for easy, one-tap authentication.




Two-factor authentication app for Yandex accounts and also other QR-code based temporary codes for two-factor authentication




Effortlessly share 2FA SMS with your team. This number works with all services, from WhatsApp to ChatGPT, and connects to numerous tools through Zapier or our webhook integration.



Secure your Zoho Account with easy-to-use, multi-factor authentication. Because hackers won't give you a second chance.




CryptoPhoto gives you a fast and safe way to log into your favorite participating web sites while enjoying leading-edge protection against phishing, malware attacks, and scamming.




Secures accounts with encrypted 2FA and MFA code generation, multi-device synchronization, import/export support, breach alerts, password management, biometric and PIN protection, Apple Watch access, Home Screen widget, organizational folders, and custom icons.



