OllyDbg for Windows

Name: OllyDbg
Rating: 4 (12 reviews)
Author: Oleh Yuschuk

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Used OllyDbg for Windows?

Editors’ Review

Download.com staffFebruary 25, 2026

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.

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Trial version

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.

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Full Specifications

GENERAL

Release: October 21, 2009

Latest update: February 25, 2026

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: 184,017

Downloads Last Week: 1

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Last Updated

User Reviews

4/5

12 User Votes

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ERHAN159August 5, 2009
Pros
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Cons
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Summary
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zero
VIKTORUSUSSeptember 7, 2007
Pros
I don`t see software
Cons
I am very very have this software but bad links you have
Summary
iyi pr?
collateral777August 13, 2007
Pros
iyi pr?
Cons
te?ekkürler
Summary
iyi bir prog.
trinitrnJuly 29, 2007
Pros
iyi bir prog.
Cons
iyi bir prog.
Summary
no se
ecfisaSeptember 18, 2005
Pros
no se
Cons
no se
Summary
Download link is broken
poudevigneSeptember 10, 2005
Pros
?
Cons
Cannot download
Summary
Great tool with easy use
ZonkleSeptember 3, 2005
Pros
everything is great.
Cons
non.
Summary
dude
due444July 4, 2005
Pros
dude
Cons
dude
Summary
Excellent
July 16, 2004
Pros
Cons
Summary
You can never beat this awesome program that can disassmeble, modify assembly level and run the code.
Solid Product
April 15, 2004
Pros
Cons
Summary
Great product, however it takes a little time to get used to the interface. Once the time is taken and the application is learned, its a very powerful and solid tool.

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.

OllyDbg for Windows

Editors’ Review

Top Recommended Alternative

HTA to EXE Converter

Pros

Cons