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OpenSuSE - KIWI Image System
The OpenSuSE KIWI Image System provides a complete operating system image solution for Linux supported hardware platforms as well as for virtualisation systems like Xen. The KIWI architecture was designed as a two level system. The first stage, based on a valid software package source, creates a so called physical extend according to the provided image description. The second stage creates from a required physical extend an operating system image. The result of the second stage is called a logical extend or short an image.
Read more about the system design of KIWI in the following PDF document: kiwi.pdf
The kiwi tools can be found in the kiwi packages as part of the openSUSE Tools project.