- CartComm
- CartParms
- Comm
- Count
- Datatype
- DistGraphNeighbors
- DoubleComplex
- DoubleInt
- Errhandler
- File
- FileView
- FloatComplex
- FloatInt
- Freeable
- GraphComm
- GraphParms
- Group
- Info
- Int2
- Intercomm
- Intracomm
- LongInt
- Message
- MPI
- MPIException
- Op
- Prequest
- Request
- ShiftParms
- ShortInt
- Status
- Struct
- UserFunction
- Version
- Win