Winkeyfinder 2.10

Win keyfinder is a Small Freeware Utility that helps find Windows Product/CD Key that was used during Windows Installation from system Registry, it can retrieve lost product key from MS Windows 8, MS Windows 8.1, windows XP, win 2000, windows me, 98, 2003 and .NET Product keys from the registry...

source https://www.techspot.com/downloads/7131-winkeyfinder.html