OllyDbg - OllyDbg is a 32-bit assembler level analysing debugger.
Ghidra - Software Reverse Engineering (SRE) Framework
X64dbg - X64dbg is a debugging software that can debug x64 and x32 applications.
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.
SoftICE - SoftICE is a debugging software for windows and DOS that analyzes all your programs and repairs them.
Immunity Debugger - Immunity Debugger is a powerful new way to write exploits, analyze malware, and reverse engineer...