madCodeHook - "madCodeHook" offers everything you need to hook code (mostly APIs).
Treo - Treo is the page speed monitoring tool that helps your customers from obtaining a faster web experience.
Microsoft Research Detours - Detours is a software package for re-routing Win32 APIs underneath applications.
Watchman Monitoring - Watchman Monitor is a powerful and easy-to-use, system monitoring & reporting tool.
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).
ApplinX - Modernize core applications in just days without changing existing code.