Malcat - Malcat is a feature-rich hexadecimal editor / disassembler for Windows and Linux for malware analysts, incident responders, CTF players and SOC operators.

iHex - iHex is the premier hex editor and data analysis tool for Mac OS X.

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.

PE-bear - PE-bear is a reversing tool for PE files.

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