Registry Spy provides a cross-platform Open Source viewer for the Windows registry.
It is designed to be a modern and versatile explorer for raw registry files and includes on-the-fly parsing. You can simultaneously open multiple hives, modify timestamps, perform searches, and view hex info.
Registry Spy provides a solid alternative to Regedit with some added features.
As with any registry modification, it is advised to create a backup just in case you run into an issue.
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.