Most of Us use Windows XP, Windows Vista, Windows 7, Windows 8 etc, but Ubuntu is also a good choice. Here are some wallpaper for Ubuntu lovers, If you are not familiar with Ubuntu don't forget to try it. What is Ubuntu? Ubuntu is a computer operating system based on the Debian Linux distribution and distributed as free and open source software. It is named after the Southern African philosophy of Ubuntu ("humanity towards others"). Ubuntu is designed primarily for use on personal computers, although a server edition also exists.