It's several utilities in one application, eg:Application bars (OutLook look a like)Yo!Explorer (For accessing Explorer fast as the selected folder/drive as root)Tray bars pop-up menu (drives connected, show free space for each drive. Dial-up networking).Yo!Menus and its Menu manager (Create own pop-up menus in the menu manager. Features a Dynamic submenu wich creates menus when accessing the drives/folders).Setup: how Yo!Explorer should appear and disappear. Add own menu command to Windows popup menu, set cache limit, edit dos-start-files onany drive. Disable/Enable auto run applications from the registry, Edit Autoexe.bat / Config.sys on any drive (nice if your an administrator), Add a own menu choice with a command line to any registered extension. Set limit to Windows use of the virtual cache. Enable / Disable registry run.Yo!MPEG Player: MPEG Layer I, II and III player (Only available to licenced beta users)Many more...