Unity Tweak Tool - Unity Tweak Tool is a settings manager for the ...
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
dconf Editor - dconf is a low-level configuration system. Its main purpose is to provide a backend to GSettings on platforms that don't already have configuration storage system.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Sysinternals Suite - The Sysinternals Troubleshooting Utilities have been rolled up into a single Suite of tools.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.