Description
You have a program with no source and you need to know what it is doing in memory; the old way is grinding through assembly line by line. x64dbg is the open-source user-mode debugger most Windows reverse engineers reach for, handling both 32-bit and 64-bit programs with disassembly, registers, memory dumps and call stack in one window.
It is a daily tool for reverse engineering and malware analysis: breakpoints, stepping, memory inspection and scripting, backed by a mature plugin ecosystem. The community has also built an MCP server for it so AI assistants such as Claude Code and Codex can drive the debugger.
Debugging and disassembly：x86 and x64 support, with disassembly, registers and stack in the CPU view, plus stepping and run-to-cursor.
Breakpoints and tracing：Software, hardware and memory breakpoints, conditional breakpoints and execution tracing.
Memory and symbols：Memory map, multiple dump windows, symbol and reference search.
Scripting and plugins：Built-in script commands, plugin support and customizable themes.
Getting it：Download a snapshot from GitHub Releases and run it unpacked; open source, Windows only.
It is a daily tool for reverse engineering and malware analysis: breakpoints, stepping, memory inspection and scripting, backed by a mature plugin ecosystem. The community has also built an MCP server for it so AI assistants such as Claude Code and Codex can drive the debugger.
Features
Debugging and disassembly：x86 and x64 support, with disassembly, registers and stack in the CPU view, plus stepping and run-to-cursor.
Breakpoints and tracing：Software, hardware and memory breakpoints, conditional breakpoints and execution tracing.
Memory and symbols：Memory map, multiple dump windows, symbol and reference search.
Scripting and plugins：Built-in script commands, plugin support and customizable themes.
Getting it：Download a snapshot from GitHub Releases and run it unpacked; open source, Windows only.
