Fedora is a Linux-based operating system that showcases the latest in free and open source software.

http://fedora.redhat.com

We produce Gentoo Linux, a special flavor of Linux that can be automatically optimized and customized for just about any application or need.

http://www.gentoo.org

KNOPPIX is a bootable CD with a collection of GNU/Linux software, automatic hardware detection, and support for many graphics cards, sound cards, SCSI and USB devices and other peripherals. KNOPPIX can be used as a Linux demo, educational CD, rescue system, or adapted and used as a platform for commercial software product demos. It is not necessary to install anything on a hard disk.
 

http://www.knoppix.net

Mandriva Linux is a community-based Linux distribution, suitable for a wide range of situations from typical desktop use through development and server roles up to clustering. This site contains information for both Mandriva Linux users and the Mandriva Linux development community.

http://www.mandrivalinux.com/

Bart's PE Builder helps you build a "BartPE" (Bart Preinstalled Environment) bootable Windows CD-Rom or DVD from the original Windows XP or Windows Server 2003 installation/setup CD, very suitable for PC maintenance tasks.

It will give you a complete Win32 environment with network support, a graphical user interface (800x600) and FAT/NTFS/CDFS filesystem support. Very handy for burn-in testing systems with no OS, rescuing files to a network share, virus scan and so on.
This will replace any Dos bootdisk in no time!

http://www.nu2.nu/pebuilder/

Ubuntu is a community developed, linux-based operating system that is perfect for laptops, desktops and servers.

Check out the site the KdG students have made for a year-end project.

http://www.eofficetools.info/ubuntu

http://www.ubuntulinux.org