CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
ShutUp10 - Free antispy tool for Windows 10
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
W10Privacy - Very advanced tool to control Windows 10 privacy.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
WindowsSpyBlocker - Block spying and tracking on Windows