The OpenID library with batteries included.
Features of the 2.x.x series include:
* Refined and easy-to-use API.
* Extensive documentation.
* Many storage implemetations including file-based, sqlite,
postgresql, and mysql.
* Simple examples to help you get started.
* Licensed under the Apache Software License.
* Includes a Simple Registration API
* Versions 1.x.x supports protocol version 1; versions 2.x.x support
both major OpenID protocol versions transparently
