muLinux is a minimalistic, but mostly complete, script-based Linux distribution that fits on a single 1722k floppy. X11, GCC, VNC, and TCL addons are supported on additional floppies. It includes many basic system functions, such as PPP and Ethernet support, mail processing, NFS, Samba, FTP, IRC Finger, ipfw, etc.
freeBIOS is designed to be a generic open source firmware for use in any PC-like system. Firmware initializes a computer and its peripherals, and then transfers control to the operating system. Firmware also provides various interfaces which operating systems may call to accomplish certain system-wide tasks like power management or PCI bus scanning.
ZipSpeak is a talking mini-distribution of Linux for blind and visually impaired people, based on version 7.0 of the Slackware distribution and version 0.08 of the Speakup screen reader. Like ZipSlack, ZipSpeak is designed to be installed on an existing MS-DOS or Windows system, so that the user can try out a talking Linux system with a minimum of difficulty, and without assistance from someone who can see.
TINY is a small Linux distribution designed especially for reusing old computers. It has very low demands in terms of hardware capacity, and even a Linux beginner can install it easily. No CD driver is required for installation, even for standalone machines. TINY is GUI capable . As long as your machine can bear it, you can run all available Linux applications on it.
Pklinux-bigi is a Slackware derived distribution based on glibc 2.2 and Linux 2.4.0-test11. It can run on 386, 486, 586, and Pentium machines with only 4 MB of RAM. Builtin features include IP tunneling, firewalling, encapsulation, QOS(based on ipv4 RSVP), kernel debugging, loopback, network block device, and numerous filesystems (including ntfs and sysV). It contains Apache, proftpd, bind 9.0, syslogd, sendmail, iptables, iproute2, and gated. NAT configuration by iptables is included by default. It is a loopdisk based distribution which can be directly run from DOS, no hdd partitioning needed. This distribution is kept as minimal as possible and it can be useful in places where you want a low end computer to act as a firewall, webserver, mail server, router, or an alternative to zipslack.