ProduKey is a small utility that displays the ProductID and the CD-Key of MS-Office, Windows, Exchange Server, 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.
ProduKey doesn't requite any installation process or additional DLLs. In order to start using it, just run the executable file - produkey.exe
The main window of ProduKey displays the list of Windows, Office, and SQL Server products installed on your system. For each product, the "Product ID" and "Product Key" are displayed.