Ubuntu-greate operating system

Ubuntu is an opensource(free) computer operating system that have famous for its speed,graphics,high security,highly available softwares and amazing user interface. Inbuilt office,internet browser(firefox),audio-video player and amazing hardware setup that make ubuntu as a greate OS. Make prasentation,word processor,image viewer, and image editor that easy to use and greate work. Rithembox media player will play music, watch video and stream media on internet. You will get amazing experiance of media. Mozila firefox internet browser help to surf and download from internet.it make greate surfing experiance to user without stopping. A lot of available software,tools and games that easily install on machin,its totaly free to use. It compare with microsoft's windows OS that not free. User may get amazing experiance of Operating system. This OS will be downloaded from its website. If you try this OS then forget windows xp,vista or 7, thats my promise.