Download Windows Registry
Mz Registry Optimizer 3.0.0

Defrag the Windows Registry, eliminating all the spaces and so optimizing it.
RegCool 3.105

A practical free utility to explore and compare the Windows Registry and all its entries.
RegScrubXP 3.25

Securely clean obsolete information from the Registry in Windows 2000 and XP.
Error Repair Pro 4.1.1

Detect and repair problems that could occur in the Windows registry.
AML Free Registry Cleaner 4.20

Repair your Registry and delete all the unnecessary temporary files.