SDelete - Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.
Avast Cleanup - Next generation tuneup and cleanup for your PC
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...
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.