Tails
The Amnesic Incognito Live System (Tails) is a Debian-based live DVD/USB with the goal of providing complete Internet anonymity for the user. The product ships with several Internet applications, including web browser, IRC client, mail client and instant messenger, all pre-configured with security in mind and with all traffic anonymised.
VS
ArchBANG Linux
ArchBang Linux is a lightweight distribution based on Arch Linux. Using the labwc Wayland compositor, it is fast, up-to-date and suitable for both desktop and portable systems.