Onyx by Titanium - This website provides operating system utilities for macOS

SDelete - Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.

R-Wipe&Clean - R-Wipe&Clean is a complete R-Tools answer for wipe futile records and keep up your PC protection.

Wise Disk Cleaner - Clean junks of Browsers, remove junk and useless files of Windows and Defragment your disk. Wise Disk Cleaner can delete these unnecessary files on your hard disk to free up disk space and make your computer run faster.

CleanMyMac X - Clean, protect and speed up your Mac

Windows Disk Cleanup - Disk Cleanup is a computer maintenance utility included in Microsoft Windows designed to free up...