AlienGUIse Theme Manager is a completely free program designed to change the appearance of elements (Start menu, windows, icons, bars) located in Windows. The program is based on Object Desktop technology, including such programs as DesktopX, IconPacager, Theme Manager or WindowBlinds from Stardock Corporation. AlienGUIse Theme Manager, despite its English language version, is very easy to use and is limited to choosing the right style for the system in the menu.

By default, the application has built-in 5 skins, the remaining skins can be easily searched on the Internet.