Mutagenix is built on Slackware Linux and uses Slapt-get as the foundation for the Mutagenix build system. A simple hard-drive installation tool is included. The build system is available for download in the download sections and includes copious notes on building the kernel and supporting software for making your own LiveCD.
It is also extremely easy to boot up on Mutagenix, add and remove programs, configure to your taste and then remaster a new CD image. Burn it to disk and you have your own customized Mutagenix LiveCD.
Download Link: http://mutagenix.org