Mauth (pronounced Moth) is a Two-Factor Authentication app with support for TOTP and HOTP (coming soon) and compatibility with Google Authenticator.



OTPClient is described as 'GTK+ application for securely managing TOTP & HOTP tokens. Content is encrypted on disk using AES256-GCM. Master password derived using PBKDF2 with 100k iterations & SHA512 as hash algorithm. Can import encrypted backups from andOTP & Authenticator+' and is a Authenticator in the security & privacy category. There are more than 25 alternatives to OTPClient for a variety of platforms, including Android, iPhone, Linux, Android Tablet and iPad apps. The best OTPClient alternative is Aegis Authenticator, which is both free and Open Source. Other great apps like OTPClient are Proton Authenticator, Bitwarden Authenticator, 2FA Authenticator (2FAS) and Authy.
Mauth (pronounced Moth) is a Two-Factor Authentication app with support for TOTP and HOTP (coming soon) and compatibility with Google Authenticator.



OTP authenticator app for managing your 2FA / OTP codes on iPhone, iPad, Mac and Apple Watch.



Keysmith is a token generator for your two-factor authentication (2FA) logins. It supports time and hash-based one-time passwords (TOTP/HOTP).

2fast (acronym for two factor authenticator supporting TOTP) is the first free, open source, two factor authenticator for Windows and Android with the ability to store the sensitive data encrypted at a place of your choice instead of a 3rd party cloud location.






Gnome Authenticator is a desktop 2FA code generator for Linux desktops, like Ubuntu.

FreeOTP+ is a fork of FreeOTP with an updated user interface and with backup/restore functionality (to external files or via built-in Android backup/restore).


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.



Etopa is the most popular Web-based alternative to OTPClient.
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.



An awesome two-factor authenticator based on Flutter, supports Android, Windows and Linux platforms, and supports multiple cloud backup methods such as Onedrive, Dropbox, WebDAV, S3Cloud, etc.
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.


I like it because it's the Windows alternative to OTP Client, I've never used it.