The CommonDesktopEnvironment(CDE) was anX11/Motifdesktopenvironmentdeveloped byIBM, HP, Sun,Fujitsu andHitachi forUNIX. It wasalsocommercializedfor Linux. CDEhas become OpenSource in 2012.It comprisesfile manager,text editor,terminalemulator,agenda, emailclient andextensive help.An extension ofthe Korn Shellcan be used towrite graphicalapplications.Compared withKDE or GNOME,it uses verylittle memoryand CPU power,making itappropriate forold orlow-powered(ARM