Microsoft PIDX Check
First and original product key checker, Microsoft PIDX Check has been included in many one-click activation crack for Windows Vista. It can retrieve, PID (Product ID), ID1, ID2, Type, Subtype, Class and Crypto ID of the product key.
Windows 7 Product Key Checker :
Windows Product Key Checker is developed by Russian programmer, and has an updated for Windows 7 RTM Build 7600.16385 by using the new pidgenx.dll. Windows 7 Product Key Checker also has enhanced on graphical user interface, with full description of the every fields of the product key, namely Product ID, Extended PID, Activation ID, Edition ID, License Type, License Channel, and Crypto ID.