Validation Server
The YubiKey Validation Server provides OTP validation and management services through web service APIs.
Note that most applications typically talk to a YubiKey OTP validation server using our client libraries.
Yubico PHP Server
YubiKey OTP validation server and key storage module in PHP is recommended.
» Google Code "yubikey-val-server-php" Project
» Google Code "yubikey-ksm" Project
Yubico Java Server
YubiKey OTP validation server in Java. Not officially supported by Yubico any more.
» Google Code "yubikey-server-j" Project
Third-party Python OATH/YubiKey Server
Third party validation server with support for YubiKey and OATH.
» Google Code "yubico-yubiserve" Project
Windows ActiveX/COM component
Not a complete server, but a versatile toolbox for verifying both Yubico- and OATH-HOTP OTPs.
