RegSnap is a tool that can help you analyze changes made to the Windows Registry. You can view, explore and compare saved registry snapshots and find which keys were modified, deleted, or added. Also, you can analyze other system settings such as a contents of system directories. RegSnap generates HTML based reports and undo/redo .reg files. RegSnap can export and import .REG files, it has easy to use REGEDIT-alike user interface.