Tails

http://linux.softpedia.com/get/System/Operating-Systems/Linux-Distributions/Tails-27487.shtml#download


Previously known as Incognito Live CD/USB, Tails is a live-only Linux operating system that provides users with a perfect computing environment for surfing the Internet anonymously. It is based on the Debian GNU/Linux and Tor technologies.

Distributed as a 32-bit Live CD

Dubbed “The Amnesic Incognito Live System,” Tails is an open source Linux distribution delivered as a single Live CD ISO image that supports only 32-bit instruction set architectures. It can be deployed to a SD card, USB thumb drive, or CD/DVD discs.