Tron Script - Tron is a glorified collection of batch files that automate the process of cleaning up Windows systems.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
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.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
NETGATE Registry Cleaner - NETGATE Registry Cleaner cleans and defragment your registry.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.