010 Editor - 010 Editor: Professional hex editor with Binary Templates. A fast, flexible, easy-to-use hex editor.
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.
Synalyze It! - You got a binary file and don't know its contents.
Okteta - Okteta is a simple editor for the raw data of files.
HxD - HxD is a carefully designed and fast hex editor which, additionally to raw disk editing and...
Hex Workshop - Hex Workshop: Hex Editor, Sector Editor, Base Converter and Hex Calculator for Windows