BYLD - Build Your Linux Disk (BYLD) shows you how to build a single floppy linux distribution.
Debian GNU/Linux - Debian GNU/Linux is a free distribution of the GNU/Linux operating system. It is maintained and updated through the work of many users who volunteer their time and effort.
DragonLinux - DragonLinux is a tiny Internet-ready distribution of Linux that runs on a DOS partition.
tomsrtbt - The design goal of tomsrtbt is "to have the most Linux on one floppy disk". tomsrtbt is a Linux distribuation targeted for: rescue recovery panic & emergencies, tools to keep in your shirt pockets, whenever you can't use a hard drive.
Vector Linux - A small, fast intel86 based linux distribution that requires only 175 MB of disk space and 16 MB of ram. Despite its size, Vectorlinux retains full functionality with a gui desktop, full development environment, ftp server, networking utilities, and a full range of desktop and console applications. It only requires a two file download for full installation.