| EAbort | Abort error. | 
| EAbstractError | Abstract error. | 
| EAccessViolation | Access Violation error | 
| EArgumentException | Invalid argument passed to a function | 
| EArgumentNilException | Exception raised when a required argument is Nil. | 
| EArgumentOutOfRangeException | Argument out of valid range passed to a function | 
| EAssertionFailed | Assertion failed error. | 
| EBusError | Bus error exception | 
| EControlC | Control-C (abort) was pressed on the console. | 
| EConvertError | Conversion error. | 
| EDirectoryNotFoundException | Exception raised when a directory is not found. | 
| EDivByZero | Division by zero error. | 
| EEncodingError | Exception raised by the TEncoding class. | 
| EExternal | External Exception. | 
| EExternalException | External exception | 
| EFileNotFoundException | Exception raised when a file is not found. | 
| EFormatError | Formatting error exception | 
| EHeapMemoryError | Heap memory error | 
| EInOutError | Input/Output error | 
| EIntError | Integer operation error. | 
| EIntfCastError | Invalid interface cast error. | 
| EIntOverflow | Integer overflow error. | 
| EInvalidCast | Invalid typecast error. | 
| EInvalidContainer | Invalid container error. | 
| EInvalidInsert | Invalid insert error. | 
| EInvalidOp | Invalid operation. | 
| EInvalidOpException |  | 
| EInvalidPointer | Invalid pointer operation | 
| EMathError | Mathematical error | 
| ENoConstructException | Error raised when instantiating a TCharacter class | 
| ENoDynLibsSupport |  | 
| ENoThreadSupport | No Thread support error. | 
| ENotImplemented | Exception raised in case of a not implemented feature. | 
| ENotSupportedException | Exception raised when a feature is not supported. | 
| ENoWideStringSupport | Exception raised if no widestring support is available in the executable | 
| EObjectCheck | A Nil object reference was encountered | 
| EOSError | Operating system error. | 
| EOutOfMemory | Out of memory error. | 
| EOverflow | Float overflow error. | 
| EPackageError | Package error. | 
| EPathNotFoundException | Exception raised when a path is not found. | 
| EPathTooLongException | Exception raised when a path name is too long. | 
| EPrivilege | Privileged instruction error. | 
| EProgrammerNotFound |  | 
| EPropReadOnly | Read-only property error. | 
| EPropWriteOnly | Write-only property error. | 
| ERangeError | Range check error. | 
| ESafecallException | SafeCall exception. | 
| ESigQuit |  | 
| EStackOverflow | Stack overflow error. | 
| EThreadError |  | 
| EUnderflow | Float underflow error | 
| EVariantError | Variant error. | 
| Exception | Base class of all exceptions. | 
| EZeroDivide | Division by zero error. | 
| IReadWriteSync | Read/Write synchronizer | 
| TBigEndianUnicodeEncoding | Big-endian UTF-16 Unicode encoding | 
| TBooleanHelper | Helper for the Boolean type. | 
| TByteBoolHelper | Helper for the ByteBool type. | 
| TByteHelper | Helper for a byte-typed ordinal value | 
| TCardinalHelper | Helper for a Cardinal-typed ordinal value | 
| TDoubleHelper | Helper for Double floating point type | 
| TEncoding | Encoding support | 
| TExtendedHelper | Helper for Extended floating point type | 
| TGuidHelper | Helper type for TGUID | 
| TInt64Helper | Helper for a Int64-typed ordinal value | 
| TIntegerHelper | Helper for a Integer-typed ordinal value | 
| TLongBoolHelper | Helper for the LongBool type. | 
| TMBCSEncoding | Multi-Byte character set encoding | 
| TMREWException |  | 
| TMultiReadExclusiveWriteSynchronizer | Standard implementation of a IReadWriteSync  interface | 
| TNativeIntHelper | Helper for a NativeInt-typed ordinal value | 
| TNativeUIntHelper | Helper for a NativeUInt-typed ordinal value | 
| TQWordHelper | Helper for a QWord-typed ordinal value | 
| TShortIntHelper | Helper for a ShortInt-typed ordinal value | 
| TSimpleRWSync | Read/Write synchronizing object. | 
| TSingleHelper | Helper for Single floating point type | 
| TSmallIntHelper | Helper for a SmallInt-typed ordinal value | 
| TStringHelper | Helper type for strings. | 
| TUnicodeEncoding | UTF-16 Unicode encoding | 
| TUTF7Encoding | UTF-7 Unicode encoding | 
| TUTF8Encoding | UTF-8 Unicode encoding | 
| TWordBoolHelper | Helper for the WordBool type. | 
| TWordHelper | Helper for a Word-typed ordinal value |