uBuntu live CDs let you try the new OS before installing it on your hard drive. All you have to do is pop in your live uBuntu CD in your optical drive and reboot. However, this approach required you to have a CD. Canonical, the company behind uBuntu has gone a step ahead and made the whole uBuntu experience available online. You can try out uBuntu without downloading it here: #-Link-Snipped-#