The ImageX GUI is a native application for the x86 and x64 platforms that will also work in Windows PE (WinPE). There is also a COM component version included that implements some of the basic functionality for direct use in languages such as VBScript.
GImageX is a useful extension of ImageX. Especially if you work only every now and then with WIM images, you will find GImageX more convenient and you probably will accomplish your tasks more quickly than with ImageX
Download GImageX from here