AriOS 4.0 is an Ubuntu-based Linux distribution with a highly customised and enhanced GNOME Shell. Built upon the solid base of Ubuntu 12.04 LTS, AriOS comes with GNOME Shell as the default desktop, carefully modified and enhanced using a number of extensions to offer a better and more familiar user experience. AriOS is not a yet-another Ubuntu remaster. It comes with a slew of features, some of them unique. A beautiful, productivity-oriented desktop session using Avant Window Navigator + Compiz/Metacity; a script to auto-detect NVIDIA Optimus chips and install Bumblebee software; a GUI to turn on/off auto-mounting of partitions at boot; a handpicked selection of multimedia, graphics and office software.