... Authenticator software tokens. SMS code sending is currently implemented for several providers (ASPSMS, Clickatell and IntelliSMS).
The data storage of the command line utility is by default flat files based in order to simplify deployment in a few minutes, but MySQL backend is supported too.
multiOTP can be easily integrated in RADIUS servers like FreeRADIUS under Linux/Windows or TekRADIUS LT under Windows.
multiOTP is also the engine of the credential provider multiOTP Credential Provider.