Icon of program: OllyDbg

OllyDbg for Windows

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Editors’ Review

Download.com staff
OllyDbg is a 32-bit debugger for Windows that excels at analyzing binary code when source is unavailable. It offers deep insights into application behavior.

  • Pros

    • Focuses on binary code analysis for unavailable source.
    • Predicts register contents and recognizes procedures.
    • Locates routines from object files and libraries.
    • Supports custom labels and comments in disassembled code.
    • Allows writing patches back to executable files.

  • Cons

    • Limited to 32-bit applications.
    • User interface may feel dated.
Icon of program: OllyDbg

OllyDbg for Windows

Download now

Used OllyDbg for Windows?

Explore More

Full Specifications

GENERAL
Release
Latest update
Version
1.10
OPERATING SYSTEMS
Platform
Windows
Operating System
  • Windows 95
  • Windows 98
  • Windows XP
  • Windows 10
  • Windows 2000
  • Windows NT
Additional Requirements
None
POPULARITY
Total Downloads
183,926
Downloads Last Week
7
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Program available in other languages

Last Updated

User Reviews

3.9/5

11 User Votes

Developer’s Description

By Oleh Yuschuk
Analyze and debug applications with focus on binary code.
OllyDbg is a 32-bit assembler level analyzing debugger for Microsoft Windows. Emphasis on binary code analysis makes it particularly useful in cases where source is unavailable. It predicts contents of registers, recognizes procedures, API calls, switches, tables, constants and strings, locates routines from object files and libraries, allows custom labels and comments in disassembled code, writes patches back to executable file and more.

You can write your own plug-ins - dynamic link libraries that attach to OllyDbg and provide new functions. Plugins can insert entries into pop-up menus of OllyDbg windows, process keyboard shortcuts, save data to .ini and .udd files and call more than 170 functions exported by OllyDbg.

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