CCleaner - CCleaner cleans, speeds up and frees up space on business endpoints.
iHex - iHex is the premier hex editor and data analysis tool for Mac OS X.
Glary Utilities - The No. 1 Free, Powerful and All-in-one utility for cleaning your PC
PilotEdit - PilotEdit Lite is an advanced text and hex editor that supports opening of files larger than 4GB.
BleachBit - When your computer is getting full, BleachBit quickly frees disk space.
HextEdit - HextEdit is a proficient hex editor and disassembler for Mac.