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.
Ghidra - Software Reverse Engineering (SRE) Framework
OllyDbg - OllyDbg is a 32-bit assembler level analysing debugger.
X64dbg - X64dbg is a debugging software that can debug x64 and x32 applications.
radare - Radare, the highly featured reverse engineering framework.
Malcat - Malcat is a feature-rich hexadecimal editor / disassembler for Windows and Linux for malware analysts, incident responders, CTF players and SOC operators.