The Winkeyfinder program is another free utility that retrieves product keys from the Windows registry.
Advantages include small program size, no installation required, and additional features such as the ability to change registered user information.
Finds Keys for Operating Systems: Windows 7, Windows Vista, Windows XP, Windows 2000, Windows ME, and Windows 98.
Finds Keys for Other Software: Microsoft Office 2010, 2007, 2003, XP, 2000 SP2, and 97.
Winkeyfinder v1.75 Review and Free Download
Though it will display a product key for Windows 10, Winkeyfinder doesn’t support that version of Windows, so the key it shows is not correct
And To buy product key you visit www.softonlineshop.com to Download Microsoft Office and Windows Product Key