Microsoft Research Detours is described as 'V3 Professional is a library for instrumenting arbitrary Win32 functions on x86, x64, and IA64 machines. Now you can intercept Win32 functions by re-writing the in-memory code for target functions' and is an app in the development category. There are six alternatives to Microsoft Research Detours for Windows, .NET Framework and Microsoft Visual Studio. The best Microsoft Research Detours alternative is Deviare API Hook, which is both free and Open Source. Other great apps like Microsoft Research Detours are Deviare In-Process, HookInjEx, Mhook and EasyHook.