2FA Authenticator (2FAS) is not available for Linux but there are plenty of alternatives that runs on Linux with similar functionality. The best open source Linux alternative is Proton Authenticator. If that doesn't suit you, our users have ranked more than 50 alternatives to 2FA Authenticator (2FAS) and 12 are open source and available for Linux so hopefully you can find a suitable replacement. Other interesting open source Linux alternatives to 2FA Authenticator (2FAS) are Ente Auth, Authenticator Extension, Nitrokey and Keysmith.
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.
Generates and stores two-factor authentication tokens with device encryption, offers secure cloud backup, multi-device synchronization, offline mode, and import/export through QR, file, or manual input. Migration and restore tools reduce risk of token loss.
Requires a log in, having 2fa on multiple types of devices like the same laptop you are logging into is more secure, developed in a country with strong anti-privacy laws.
Authenticator generates two-factor authentication (2FA) codes in your browser. Use it to add an extra layer of security to your online accounts.
Provides robust USB-based encryption, digital signing, and secure login with hardware-level secret key storage, user-defined PIN, tamper-proof smart card, open source design, email and data encryption compatibility, virus protection, and multi-platform support.
Keysmith is a token generator for your two-factor authentication (2FA) logins. It supports time and hash-based one-time passwords (TOTP/HOTP).
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+.
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.
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.
Kerveros is a robust two-factor authentication code generator that combines ease of use with enterprise-grade security. It generates time-based one-time passwords (TOTP) for your online accounts while keeping your secrets encrypted and protected.
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Ente is the best open source 2fa app/program out there. Its actively developed and is the only 2fa service with i desktop app as well, so if you lose your phone you can also login through other devices