- XApp
- XAsync
- XAsyncFuture
- XBaseObject
- XBaseType
- XCache
- XClassInvalidException
- XCls
- XCmd
- XCmdResult
- XCodec
- XCodecAnnot
- XConfig
- XConsole
- XConsumer
- XConsumer2
- XConsumer3
- XConsumerEx
- XConsumerEx2
- XCvt
- XDestructor
- XEx
- XFieldNullException
- XFile
- XFunction
- XFunction2
- XFunction3
- XFunctionEx
- XFunctionEx2
- XJson
- XLock
- XLogger
- XLs
- XMag
- XMap
- XMath
- XObj
- XPool
- XPoolItem
- XProfiler
- XProfilerObj
- XProfilerTimer
- XQueue
- XResult
- XRunnable
- XRunnableEx
- XSchedule
- XScheduleFuture
- XScheduleParam
- XSeq
- XSer
- XStr
- XStrBuilder
- XStrJoiner
- XSupplier
- XSupplierEx
- XThreadFuture
- XThreadPool
- XTime
- XTuple2
- XTuple3
- XTxtReader
- XTxtWriter
- XUrl
- XYaml