 It was titled Luna in Windows XP, Aero in Windows Vista and Windows 7, Metro in Windows 8 and 8.1, and Fluent in Windows 10.Also common is Aqua, included with Apple's macOS.Mainstream desktop environments for Unix-like operating systems use the X Window System, and include KDE, GNOME, Xfce, and LXDE, any of which may be selected by users and are not tied exclusively to the operating system in use.