CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
Tron Script - Tron is a glorified collection of batch files that automate the process of cleaning up Windows systems.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
SKTools - SKTools is a multi-featured and easy-to-use application that is bundled with over 60 tools to help you boost the performance of the system.
Auslogics BoostSpeed - Is your internet or computer running slow? Auslogics BoostSpeed can help! This award-winning PC optimizer runs disk cleanup, defragments disks & registry, speeds up internet, and keeps your PC glitch-free. Don't let a sluggish computer hold you back.
NETGATE Registry Cleaner - NETGATE Registry Cleaner cleans and defragment your registry.