com.opensymphony.xwork2
Interfaces 
Action
ActionEventListener
ActionInvocation
ActionProxy
ActionProxyFactory
LocaleProvider
ModelDriven
Preparable
ResourceBundleTextProvider
Result
TextProvider
Unchainable
UnknownHandler
Validateable
ValidationAware
XWorkMessages
Classes 
ActionChainResult
ActionContext
ActionContext.ActionContextThreadLocal
ActionSupport
DefaultActionInvocation
DefaultActionProxy
DefaultActionProxyFactory
DefaultTextProvider
MockActionInvocation
ObjectFactory
ObjectFactory.ContinuationsClassLoader
TestNGXWorkTestCase
TextProviderFactory
TextProviderSupport
ValidationAwareSupport
XWorkTestCase
Exceptions 
InvalidMetadataException
XWorkException