RegSnap is a tool that can help you analyse changes made to the Windows Registry. You can view, explore and compare saved snapshots and learn which keys were modified, deleted, or added.
You can also analyse other sensitive system parts, such as a list of files in 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-like user interface. You can use RegSnap to view and analyse .reg files. RegSnap supports OLE Automation (i.e. RegSnap is scriptable from Visual Basic or any other Automation client).
RegSnap can connect to a remote registry and take snapshots from a remote computer.