Windows 7 Ultimate is the ultra edition of the Windows 7 operating system as it is the only edition of Windows 7 that has complete features. All other editions -with the exception of Windows 7 Enterprise which is Windows 7 Ultimate branded differently - lack features that are included in Windows 7 Ultimate. It combines remarkable ease-of-use with the entertainment features of Home Premium and the business capabilities of Professional, including the ability to run many Windows XP productivity programs in Windows XP Mode. For added security, you can encrypt your data with BitLocker and BitLocker To Go. And for extra flexibility, you can work in any of 35 languages. Get it all with Windows 7 Ultimate