TweakPower - TweakPower is a versatile PC cleaning optimization and backup software that lets you fix all the problems that occur in your PC as well as fix common problems.
Onyx by Titanium - This website provides operating system utilities for macOS
WinExt Free - Powerful Win utilities: fix registry issues, clean system junk, protect privacy, optimize system, find duplicates, show larger resources, see more info of recently accessed resources, monitor activity, make batch operations, synchronize resources.
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
CleanAfterMe - CleanAfterMe allows you to easily clean files and Registry entries that are automatically created by the Windows operating system during your regular computer work.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC