µClibc (http://www.uclibc.org/)

busybox (http://www.busybox.net/)

syslinux (http://syslinux.zytor.com/)

floppyfw (http://www.zelow.no/floppyfw/)

pcd (http://hocwp.free.fr/pcd.html)

iptables (http://www.iptables.org)