Zplinux is free to use, install and download.
It is a Linux distribution based on Ubuntu 9.04 (which is based on Debian).
The goals are to provide a free modern operating system useable in live, installable on hard disk easily and upgradeable.
The main difference with the standard Ubuntu is the set of software provided out of the box and customizations here and there.

It has been generated from an Ubuntu minimal image in a virtual machine (Virtual Box) with remastersys tools.

Some features: