PicketLink 是 JBoss 推出的一个统一身份管理框架。PicketLink 提供下面的应用组件：
IDM: Provide an object model for managing Identities (Users/Groups/Roles) and associated behavior using different identity store backends like LDAP and RDBMS.
Federated Identity: Support SAMLv2, WS-Trust and OpenID.
AuthZ: Developer friendly authorization framework
XACML: Oasis XACMLv2 implementation.
Negotiation: Provide SPNego/Kerberos based Desktop SSO.
