CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Avast Cleanup - Next generation tuneup and cleanup for your PC
System Mechanic - System Mechanic uses patented technology to help fix PC errors and restore speed. The software is compatible with multiple versions of Microsoft Windows.
Advanced System Optemizer - Clean, optimize and personalize your PC
CleanMyPC - A smart cleaning tool for a better-running computer.