When you install a new program, the installation utility adds new data to your system registry, often unremoved after the uninstallation. You can have a record of exactly what the install program did using InCtrl 4.1, InCtrl 5, System Mechanic, Safe Installer or RegShot. UNDOReg analyzes the report generated by one of these utilities, and deletes referenced registry keys.
Wise Registry Cleaner scans the Windows registry and finds incorrect or obsolete information in the registry. This is one of many tools included in the Wise Care 365 free suite.
RegCleaner is an easy-to-use program. With RegCleaner, you can easily get rid of those old and obsolete registry entries created by software that you destroyed ages ago.
Tweaking.com - Registry Backup is a backup tool that uses the Windows Volume Shadow Copy Service to backup your system registry. From the author of Tweaking.Com - Windows Repair.