PearOS

PearOS is a free, simple and elegant OS. It has its features similar to Mac OS. It provides a good multimedia experience with an appealing GUI.Pear features highly customized GNOME desktop with a dockbar applications launcher and pre-installed many popular multimedia codecs and plugins.It contains a large collection of applications.Pear OS too is based on Ubuntu but unfortunately this OS is so buggy that you will never realize that it is based on easy to use Ubuntu Linux.