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.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
CleanMyPC - A smart cleaning tool for a better-running computer.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
SDelete - Securely overwrite your sensitive files and cleanse your free space of previously deleted files using this DoD-compliant secure delete program.