One of the most popular alternatives to YubiKey is 2FA Authenticator (2FAS), which is free and open source. Other popular alternatives are Authy, Nitrokey, OnlyKey and Microsoft Authenticator. You're spoiled for choice with Authenticators like YubiKey: we list more than 25 alternatives for Android, iPhone, iPad, Linux and Mac.
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United States
Two-step verification app with offline code generation, HOTP and TOTP support, biometric login, local auto backup, QR and image import, multi-language interface, account personalization, dark mode, label grouping, and data privacy controls for secure management.
India
Coffer is a self-hosted, multi-user authenticator vault. It generates TOTP codes in the browser and encrypts each user's vault before storing it on the server. It also supports QR imports, groups, backups, and 2fas transfers.
Türkiye
2faConsole is a lightweight, cross-platform two-factor authentication (2FA) console application built with C# .NET. It uses the dependency-free Pxoqxo.Otp2fa library to provide secure, terminal-based OTP management.
