You look for a free and ready to use identity provider? Try
Based on theidentity provider, Identity Hub is a service "in the Cloud" (hosted by us) publicly accessible for those who need identity management online features.
You can use it as a personal Single Sign On server for SAML 2 and OpenID protocols. You connect to Identity Hub using a user name / password or a certificate, and the service takes care of your connection to OpenID or SAML web sites.