2FA Authenticator (2FAS)

2FAS is the easiest way to enable two-factor authentication (2FA) to verify your identity and securely log in to accounts, keeping your personal data protected from cyber threats — all from one free app. It’s designed to be private, secure, and simple, making 2FA accessible to everyone. The project is open-source, transparent, and community-driven.

Key features include offline operation, backups and restore, device-wide syncing, and optional passcode or biometric protection. 2FAS does not store passwords or metadata and works without an account. It supports TOTP and HOTP, offers quick setup guides, multi-language support, and one-tap authentication via the 2FAS browser extension, helping you log in faster and more securely.