MultiExtractor - MultiExtractor - Extract picture (JPG, PNG, GIF, BMP, ICO.
Hex Workshop - Hex Workshop: Hex Editor, Sector Editor, Base Converter and Hex Calculator for Windows
ReFox - ReFox XI, FoxPro code protection, compression and recovery.
HextEdit - HextEdit is a proficient hex editor and disassembler for Mac.
YARA - Yara is a popular tool that finds its use in helping researchers to classify and detect malware.
BinHex CryPactor - Manipulate binary and hexadecimal strings!