Alternate Linux desktops
Most Linux users are familiar with KDE and GNOME, as both are desktop environments used by most major Linux distributions but there are some really good alternate window manager out there. If you have some old PC with minimum hardware and want to run GUI on it then in this case the list of window manager provided below will definitely help you to chose one ..
It is a lightweight desktop environment for Unix operating systems. The main goal is to be fast and light, while being visually attractive and easy to use. It is based on the GTK + toolkit same as GNOME, so if you are Gnome fan, you'll find XFCE very usefull.
Enlightenment is a themeable, fast, flexible, and powerful window manager that is designed to be as configurable as possible in both look and feel. In addition, Enlightenment provides an applet API that provides functionality somewhere between the GNOME applet system and Dock Apps from Afterstep/WindowMaker. The current design aim is for Enlightenment to become a desktop shell..