Ruby OpenID 可以让你的 Ruby开发的 web 应用程序中启用 OpenID 支持
主要特性：
API for verifying OpenID identities (OpenID::Consumer)
API for serving OpenID identities (OpenID::Server)
Consumer and server support for extensions, including simple registration
Yadis 1.0 and OpenID 1.0 service discovery, including server fallback
Does not depend on underlying web framework
Multiple storage implementations (Filesystem, SQL)
Comprehensive test suite
Example code to help you get started, including:
WEBrick based consumer
Ruby on rails based server
OpenIDLoginGenerator for quickly creating a rails app that uses OpenID for authentication
ActiveRecord adapter for using an SQL store in rails
项目主页：http://janrain.com/openid-enabled/
来自:开源中国社区
