UCK is a tool that allows you to customize official Ubuntu Live CDs (including Kubuntu/Xubuntu and Edubuntu) to your needs. You can add any package to the live system, for example language packs or applications. Features: Create bootable LiveCD with predefined languages based on original Ubuntu/Kubuntu live CD using wizard with GUI Build live CD with special features using scripts. It is possible to customize root filesystem (for example install/remove packages), ISO contents (add/remove docs, change names) and initrd (add modules to boot, change boot sequence) UCK is licensed under the GNU General Public License (GPL). My thoughts... This tool was primarily created to build localized Ubuntu LiveCDs for a particular language. It does have a GUI, but the real power of UCK is in its more advanced scripts. The documentation is limited, but I find UCK very useful for doing more complex customizations. UCK Homepage