Apps similar to Etopa include Bitwarden, which is open source with a free version. Other options are Aegis Authenticator, Proton Authenticator, Ente Auth and 2FA Authenticator (2FAS). There's no shortage of Authenticators like Etopa, with more than 50 alternatives for iPhone, Android, iPad, Mac and Windows.
Sign in is easy, convenient, and secure when you use Microsoft Authenticator. Use your phone, not your password, to log into your Microsoft account. You simply have to enter your username, then approve the notification sent to your phone.
United States
OnlyKey is an open source alternative to YubiKey. OnlyKey natively supports: a hardware password manager, multiple two-factor methods (FIDO2, TOTP, and Yubico® OTP), passwordless SSH login, and OpenPGP.
United States
OVault is a super simple OTP app that lets you view and manage OTPs for all your accounts. Set up OTPs by scanning QR codes with your devices Camera App, or by manually providing the OTP secret to the app.
United Kingdom
Tofu generates one-time passwords to help you protect your online accounts. These passwords are used together with your normal password when you sign into services like Google, Facebook, Dropbox, Amazon, and GitHub.
Sweden
EU
Mauth (pronounced Moth) is a Two-Factor Authentication app with support for TOTP and HOTP (coming soon) and compatibility with Google Authenticator.
Georgia
Open-source authenticator app for iOS and macOS generates time-based one-time passwords, supports secure iCloud sync and encrypted backup, FaceID and TouchID unlocking, QR code scanning, custom icons, search, handoff for copying codes, and encrypted export.
Morocco
Keysmith is a token generator for your two-factor authentication (2FA) logins. It supports time and hash-based one-time passwords (TOTP/HOTP).
GermanyEU
OTP authenticator app for managing your 2FA / OTP codes on iPhone, iPad, Mac and Apple Watch.
Australia
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.
CzechiaEU
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.
China
LastPass Authenticator offers a unique one-tap password verification experience that no other authenticator app delivers.
United States
