Almeza offers an unattended installer which will install Windows and applications without user intervention. 30-day free trial at their web site.

Pensuites are open source and free software utility bundles that can be downloaded and installed on to a USB drive.

Found both of these in CRNTech magazine. They have a web site full of animations and ads which, nothwithstanding those issues usually has some good tech tidbits and white papers for systems managers.