groovy.util
Interfaces 
DefaultRelationNameResolver
Factory
IFileNameFinder
ObjectGraphBuilder
ResourceConnector
Classes 
AbstractFactory
AllTestSuite
AntBuilder
AntBuilderLocator
BuilderSupport
CharsetToolkit
CliBuilder
ClosureComparator
ConfigBinding
ConfigObject
ConfigSlurper
DefaultChildPropertySetter
DefaultClassNameResolver
DefaultIdentifierResolver
DefaultNewInstanceResolver
DefaultReferenceResolver
Eval
Expando
FactoryBuilderSupport
FactoryInterceptorMetaClass
FileNameByRegexFinder
FileNameFinder
GroovyCollections
GroovyLog
GroovyMBean
GroovyScriptEngine
GroovyTestCase
GroovyTestSuite
IndentPrinter
MapEntry
NamespaceContext
Node
NodeBuilder
NodeList
NodePrinter
ObjectFactory
ObjectRefFactory
ObservableMap
OptionAccessor
OrderBy
Proxy
ProxyGenerator
ResourceException
ScriptCacheEntry
ScriptException
XmlNodePrinter
XmlParser
XmlSlurper