X64dbg - X64dbg is a debugging software that can debug x64 and x32 applications.

Hex Workshop - Hex Workshop: Hex Editor, Sector Editor, Base Converter and Hex Calculator for Windows

OllyDbg - OllyDbg is a 32-bit assembler level analysing debugger.

HextEdit - HextEdit is a proficient hex editor and disassembler for Mac.

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.

PilotEdit - PilotEdit Lite is an advanced text and hex editor that supports opening of files larger than 4GB.