McAfee Avert Stinger is a stand-alone utility used to detect and remove specific viruses. It is not a substitute for full anti-virus protection, but rather a tool to assist administrators and users when dealing with an infected system.Stinger utilizes next generation scan engine technology, including process scanning, digitally signed DAT files, and scan performance optimizations.

Quicksys RegDefrag is a freeware utility to defrag registry.It optimizes registry by removing gaps, fragments and wasted space in Windows registry files.The defragmentation improves performance and boosts access to the registry.