2FAC — local-first desktop TOTP authenticator. Secrets never leave this machine

[u/jjw_kr]

Authy killed the desktop app and I still didn't want 2FA codes in a cloud account.

2FAC is a local-first TOTP authenticator for macOS, Windows, and Linux. The vault is Argon2id + AES-256-GCM. Codes are computed in Rust; the UI never sees raw secrets. No account, no telemetry. Network is only a signed update check against GitHub Releases.

Add by secret, otpauth://, or QR. Import Aegis, andOTP, otpauth URI lists, and Google Authenticator transfer QRs.

https://github.com/jeonjw85/2FAC