Maintained by author of django-otp: https://github.com/django-otp/django-otp-yubikey https://github.com/django-otp/django-otp-twilio Maintained by 3rd party authors: https://github.com/arjan-s/django-otp-messagebird https://github.com/arjan-s/django-otp-signal https://github.com/ossobv/django-otp-u2f https://github.com/goetzk/django-otp-vip