Insert is a bootable Linux operating system on a CD and is under 100 mega bytes. Its small size
allows it to boot quickly and perform very well. Insert comes with many great tools, such as, GParted, Partimage, ntfs-3g, Nmap, TCPdump, F-Prot, chkrootkit, Dillo, gFTP, and WLAN support. It is based on Knoppix 5.1.1 and uses Linux kernel 2.6.18.6.
The Live CDs website has some additional information concerning Live CDs you might find helpful.