LxPup 15.03.1

http://lx-pup.weebly.com/
LxPup is an open source Linux distribution built around the LXDE desktop environment and based on the Puppy Linux operating system. It is designed to be used on low-end computers and old hardware.
Distributed as 32-bit Live CDs for PAE and non-PAE systems

It is distributed as two Live CD ISO images, one for 32-bit PAE (Physical Address Extension) hardware platforms, and another one for non-PAE machines. They can be deployed onto a USB thumb drive or written on blank CD discs.
Boot options

The boot medium will automatically start the live system in five seconds if you don’t press the F2 or F3 keys for accessing advanced boot options. The LXDE desktop will load in about 1 minute from the moment you start the boot medium.
Uses LXDE (Lightweight X11 Desktop Environment)