A while back I took a look at the OpenID libraries available for
ColdFusion. I found two separate libraries, but neither supported
version 2 of the OpenID specification. So I picked one of them (http://
openid.riaforge.org/) and extended it to add support for OpenID 2.0.
I submitted my updated code to the original developer, who has updated
his library and released the code to the public. If you're interested,
the library is available at
http://openid.riaforge.org/