| FILETIME | A 64-bit value representing the number of 100-nanosecond intervals since January 1, 1601 (UTC) |
| HighPerformanceCounter | A performance counter that uses the high performance hardware counter on the host machine |
| Key | This class represents a registry key |
| KeySequence | An enumerable sequence representing the sub-keys of a registry Key |
| PerformanceCounter | A performance counter that uses the most accurate measurement APIs available on the host machine |
| PerformanceCounterScope< T > | Performance counter scope class generating template |
| ProcessTimesCounter | A performance counter that provides process-specific performance timings |
| Registry | Represents the local system registry |
| RegistryException | Exception class thrown by the synsoft.win32.reg classes |
| Scope | Performance counter scoping class |
| SECURITY_ATTRIBUTES | Contains the security descriptor for an object and specifies whether the handle retrieved by specifying this structure is inheritable |
| Semaphore | This class represents a Win32 semaphore synchronisation object |
| SynchException | This class is thrown by synchronisation classes in response to serious failures |
| ThreadTimesCounter | A performance counter that provides thread-specific performance timings |
| TickCounter | A low-cost, low-resolution performance counter |
| Value | This class represents a value of a registry key |
| ValueSequence | An enumerable sequence representing the values of a registry Key |
| Win32Exception | This class is thrown by synsoft.win32.* classes |