Onyx by Titanium - This website provides operating system utilities for macOS
R-Wipe&Clean - R-Wipe&Clean is a complete R-Tools answer for wipe futile records and keep up your PC protection.
AVG PC TuneUp - Peak performance for your PC. Keeps it going for longer. - More Speed Turbo Mode
Clean Temporary Places - Clean Temporary Places is a cleaning tool that lets you clean temporary files to free up some space on the disk and get rid of disk error, disk defragmentation, etc.
SlimCleaner - SlimCleaner is a software package for cleaning and maintaining your PC or mobile device. It covers your entire system and can make your computer run more efficiently. Read more about SlimCleaner.
CleanMyMac X - Clean, protect and speed up your Mac