GNU Project Debugger Alternatives

OllyDbg is a 32-bit assembler level analysing debugger.

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

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.

Immunity Debugger is a powerful new way to write exploits, analyze malware, and reverse engineer...

Radare, the highly featured reverse engineering framework.

Software Reverse Engineering (SRE) Framework

WinDbg is a multipurposed debugger for Microsoft Windows, distributed on the web by Microsoft as...

Nirsoft Simple Program Debugger is a debugging software that analyzes and displays all major debugging events across your computer, after connecting to either the running program or starting a new program in the debugging mode.

A reverse engineering platform and GUI

SoftICE is a debugging software for windows and DOS that analyzes all your programs and repairs them.

Debugger for C, C++, Objective-C, Objective-C++, Swift.

Open Source RE Platform powered by radare2.

Data Display Debugger as the name suggests is a display software for debugs that acts as a graphical interface for other debugging platforms such as DBX, JDB, XDB, GDB, ladebug, bashdb, and the perl debugger among others.