There are also other desktop environments , including : Aston , EDE , GEM , IRIX Interactive Desktop , Sun 's Java Desktop System , Mezzo , Project Looking Glass , ROX Desktop , UDE , Xito , XFast . A number of other desktop environments also exist , including ( but not limited to ) CDE , EDE , GEM , IRIX Interactive Desktop , Sun 's Java Desktop System , Jesktop , Mezzo , Project Looking Glass , ROX Desktop , UDE , Xito , XFast .