AQtime Pro - AQTime Pro is the fastest way to detect memory leaks, performance bottlenecks, and code coverage gaps across C, C++, Delphi, .

EasyHook - The reinvention of Windows API Hooking

Deleaker - Deleaker finds memory leaks, GDI leaks, leaks of handles, USER objects and others. Available both as a Visual C++ extension and standalone application.

Microsoft Research Detours - Detours is a software package for re-routing Win32 APIs underneath applications.

ANTS Memory Profiler - ANTS Memory Profiler is a .

Deviare API Hook - Deviare is a professional open source hooking engine for instrumenting arbitrary Win32 functions, COM objects, and functions which symbols are located in program databases (PDBs).