#4810
KeyCheck is a free and portable Windows/Office activation auxiliary means written by Ratiborus from Russia. It is mainly designed to view and verify the validity of product keys in batch for multiple editions of Microsoft products, including Windows 7, 8, 8.1, and Office 2010, 2013.

#3091
PIDKey is a lightweight and free database-based tool mainly used to test the validity of Microsoft Windows/Office/Visual Studio (and more) product keys in batch, made by Ratiborus and his friends from Russia. With it, we can say goodbye to the huge VAMT (Volume Activation Management Tool).