RegFromApp is a Free Portable Registry Monitor. It keeps track of or monitors the Registry changes made by applications or programs you select. If RegFromApp detects changes to your registry from the selected application, a new .reg registration file can be created containing only the changes made to the registry by the pre-selected application. This Registry Monitor also supports command line options for advanced users.
RegFromApp - Registry Monitor Screenshot
Authors Website: http://nirsoft.net/utils/reg_file_from_application.html
Download: You can download RegFromApp HERE