Simplicity Linux 15.1 / 15.4 Alpha

                 http://simplicitylinux.org
An Open Source, simple and fast Linux operating system based on the Puppy Linux distro
Simplicity Linux is an open source remix of the Puppy Linux operating system with a lot of the bloat cut out. It is built around the lightweight Xfce desktop environment and based on the Slacko Puppy distribution. It includes all the functionality that Puppy Linux should have had installed by default, providing users with both a minimalistic and fast Linux-based operating system that is suitable for low-end machines.
Distributed in multiple editions, as Live CDs

The system is distributed in four editions, Desktop, Netbook and X. Each edition has its own target audience and tries to provide users with only the best software packages and features that can not be found in the default Puppy Linux Slacko distribution.

All of them are available for download as hybrid Live CD ISO images that can be deployed to USB flash drives or blank CD discs. They feature the same boot prompt that is used on the upstream Puppy Linux release, allowing users to press the F2 or F3 keys for advanced options.