It's a freeware utility to defrag and compact Windows registry.
What does this software do?
The Windows registry is the database of information that stores all of the setup, user preferences, software and hardware configuration information. It's vital to the proper execution of Windows.
Registry data is constantly being written to and removed during a normal Windows operation. Over time this data becomes fragmented. Quicksys RegDefrag optimizes your registry by removing gaps, fragments and wasted space in Windows registry files.
Important: The program does not modify any registry entries.
Features & Benefits
Repairs defects by rebuilding your registry
Remove fragmentation with a linear and sequential registry
Compact registry by removing gaps, unused space and the amount of RAM the registry takes up
Improves applications response time
Makes Windows running more stable
Protect privacy by erasing previously deleted registry cells.