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
FydeOS
FydeOS, developed by Fyde Innovations, is a lightweight operating system that carries a Linux kernel, a browser platform and a container technology driver. It is very similar to Google ChromeOS in use.