ProduKey is a new app from NISOFT, which allows you to recover ProductID and the CD-Key of Windows 7, Vista, XP & MS Office Product Keys and SQL Server installed on your computer. You can view this information for your current running operating system, or for another operating system/computer – by using command-line options.
This utility can be useful if you lost the product key of your Windows/Office, and you want to reinstall it on your computer.
it did not show the serial key for office applications