RegSpy is a registry monitor that allows you to track changes made by a specified program. The interface provides a tree-like overview of changed or opened registry keys and provides quick access to RegEdit for further investigation. Additional features include an option to save the changes as .js or .vbs file for further processing (rollback or undo).

The license of this software is Free Trial Software, the price is $19.95, you can free download and get a free trial.