Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
Autoruns - See what programs are configured to startup automatically when your system boots and you login.
Onyx by Titanium - This website provides operating system utilities for macOS
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.