HxD - HxD is a carefully designed and fast hex editor which, additionally to raw disk editing and...
dirtyJOE - dirtyJOE - Java Overall Editor - homepage of binary java class file editor
Hex Workshop - Hex Workshop: Hex Editor, Sector Editor, Base Converter and Hex Calculator for Windows
YARA - Yara is a popular tool that finds its use in helping researchers to classify and detect malware.
IDA - The best-of-breed binary code analysis tool, an indispensable item in the toolbox of world-class software analysts, reverse engineers, malware analyst and cybersecurity professionals.
ReFox - ReFox XI, FoxPro code protection, compression and recovery.