Awesome

diStormX

The ultimate hooking library
Features:

• Supports both x86/x64
• Simple APIs and batch hooks
• Low memory foot print, will re-use trampoline pages as much as possible
• RWX sensitive, will temporarily enable RWX and then revert to RX when writing trampolines
• Uses a private heap
• Uses an OS abstraction layer - easy to add support for other OSs
• Currently supports only Windows
• Heavily tested and in field too

This library is licensed under BSD.