This is the ASO Secure Delete Shell extension, a type of utility designed for Windows, whose purported purpose is to remove redundant items from the Windows registry. Registry cleaners in general try to automate the process of looking for invalid entries within the registry and resolving or removing them. Some registry cleaners make no distinction as to the severity of the errors, and many that do may erroneously categorize errors as critical with little basis to support it.

“Advanced System Optimizer, a multi-functional system performance and optimization suite for Windows. This collection of tools lets you supercharge your PC's performance, enhance its security, tweak and optimize its settings, and customize and personalize your screens. Registry Cleaner makes your system more stable by cleaning out the bad Registry entries that build up each time you install and uninstall software. The program's Registry Optimizer defragments and rebuilds your Registry, making your entire system run more smoothly and quickly. The program includes powerful tools to clean and optimize your hard drives. The System Cleaner removes clutter and unnecessary files from your PC, allowing it to run more quickly.”