ffsearch-LiveCD is a modified Knoppix-Linux with Fast File Search running on top of it. Fast File Search is a crawler of FTP servers and SMB shares.
Formilux is a very light and secure Linux distribution. It is targeted at internet servers, routers, firewalls and semi-embedded systems. It requires a very limited administration but needs fairly skilled administrators.
LAMPPIX is aLinux Live CD booting a webserver. LAMPPIX allows you to burn your web projects (i.e. PHP presentations or Perl scripts) onto a CD-ROM and give them away to others.
SLAMPP is a generic Linux distribution that can boot directly from a CD-ROM, or optionally can be installed on a local hard drive. It is designed to be used as an "instant home server". SLAMPP is built using SLAX as its base, and Slackware linux for packages. This means you are going to have two powerful distros in one, although SLAX is also based on Slackware linux.
Xen Demo CD
Xen is a virtual machine monitor for x86 that supports execution of multiple guest operating systems with unprecedented levels of performance and resource isolation.