SDelete - Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.
CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
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.
Windows Disk Cleanup - Disk Cleanup is a computer maintenance utility included in Microsoft Windows designed to free up...
CleanMyPC - A smart cleaning tool for a better-running computer.
SCleaner - A Small, Simple and Straightforward System Cleanup Utility for Windows