Registry Workshop - Registry Workshop is an advanced registry editor.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Registrar Registry Manager - Advanced Registry Manager for Windows
Wise Registry Cleaner - Registry Cleaner and Optimizer.
RegCool - RegCool is an advanced registry editor.
Eusing Free Registry Cleaner - Eusing Free Registry Cleaner: Safely scan and repair registry problems - Spyware FREE.