If you need to install a Linux system for your low-power computer, WattOS Based on Ubuntu will be a good choice. The advantage of this system lies in low system requirements, which means that outdated hardware can also be installed, and advanced power functions are also integrated into this system, this means that WattOS is a truly usable desktop-level energy-saving operating system. Next let's take a look at the WattOS desktop: wattOS-Alpha1 edition desktop wattO 
If you need to install a Linux system for your low-power computer, WattOS Based on Ubuntu will be a good choice.
 
The advantage of this system lies in low system requirements, which means that outdated hardware can also be installed, and advanced power functions are also integrated into this system, this means that WattOS is a truly usable desktop-level energy-saving operating system.
 
Next let's take a look at the WattOS desktop:
   Desktop for wattOS-Alpha1       
WattOS-Alpha1-menu-utilizing FBPanel to give gnome like menus with a very small memory footprint.
   WattOS login interface     
WattOS-Excellent and fast file manager (PCMANFM)-almost instant opening speed.
      There are four more on page 2nd.  
WattOS is divided into four versions based on different hardware requirements:
 
WattOS: GNOME Desktop Environment
 
MWattOS: Xfce user interface
 
Mu WattOS: A graphical interface with a simplified GUI using command line
 
SubStation: Server version
 
WattOS is currently in alpha testing, which means developers still have a lot of work to do, but in another aspect, this operating system is basically available. In addition, to reduce the volume, applications such as OpenOffice can be removed, but WattOS supports apt-get and Synaptic Package Manger, this means that you can add more applications for WattOS at any time.
 
WattOS: http://www.planetwatt.com/index.php? Name = Downloads