Bringing the best of Ubuntu and Unity together, Ubuntu Unity is a beautiful, slick and lightweight Ubuntu flavor. With its beautiful design, efficient and elegant workflow, and features like the heads-up display (HUD), the Global Menu, powerful search and a high level of customizability (using the Unity Tweak Tool), you'll be able to work with an unparalleled level of efficiency. You can also choose from a wide range of window animations and effects available in Compiz.