OllyDbg

OllyDbg is a 32-bit assembler level analysing debugger. Emphasis on binary code analysis makes it particularly useful in cases where source is unavailable.

Free Windows

GNU Project Debugger

GNU Project Debugger, or gdb, is a command-line, source-level debugger for programs that were written in C, C++, D, Objective-C, Fortran, Java, Pascal, assembly, Modula-2, or Ada and compiled for any of a number of different target...

Free Open Source Mac OS X Windows Linux BSD Cygwin

Bokken

Bokken is a GUI for the Pyew and Radare projects so it offers almost all the same features that Pyew has and and some of the Radare's ones. It's intended to be a...

Free Open Source Mac OS X Linux

ArkDasm

ArkDasm is a 64-bit interactive disassembler and debugger for Windows. Supported file types: PE64, raw binary files. Supported processor: x64 architecture (Intel x64...

Free Windows

PEBrowseDbg64 Interactive

A very powerful, versatile, and customizable Win32/Win64 user mode debugger/disassembler. PEBrowseDbg64 Interactive is not a source code debugger, but operates at the...

Free Personal Windows