DISMTools is a front-end for DISM that lets you manage your Windows Imaging (WIM) files and a whole lot more.

Key features
DISMTools is the first project-based GUI. Projects store the mounted image and unattended answer files you want to apply (using the command line at this time), while also providing a scratch directory for temporary operations
DISMTools is also smart, checking first if an action can be performed before doing it

Supported actions
The following actions are supported by DISMTools
This program is in beta stages, so not every possible action is implemented. Check the "Unsupported actions" section for more details
Image management