https://github.com/multiotp/multiotp

multiOTP open source strong two factor authentication PHP library, OATH certified, with TOTP, HOTP, Mobile-OTP, YubiKey, SMS, QRcode provisioning, etc.

2fa active-directory authentication credential-provider hotp ldap motp offline otp php sms synchronization totp yubico yubico-otp yubikey yubikey-authenticators

Last synced: 05 Apr 2026