OllyDbg was added by azrael-sub7 in Jun 2009 and the latest update was made in Oct 2018. The list of alternatives was updated Dec 2019. It's possible to update the information on OllyDbg or report it as discontinued, duplicated or spam. OllyDbg is not available for Mac but there are some alternatives that runs on macOS with similar functionality. The most popular Mac alternative is IDA.It's not free, so if you're looking for a free alternative, you could try Ghidra or radare2.

OllyDbg is a 32-bit disassembler/debugger for Microsoft Windows binary files. It is shareware and it is available here. The goal today is to provide a tour of OllyDbg and how the tool can be used in reverse engineering software or malware. OllyDbg is not available for Mac but there are some alternatives that runs on macOS with similar functionality. The most popular Mac alternative is IDA.It's not free, so if you're looking for a free alternative, you could try Ghidra or radare2.

Downlaod the zip file or clone. Extract the file to C: OllyDbg (or any other place you want).

Quick start - version 1.10

Read this for quick start. Consult help file for details and more features.

Installation is not necessary. Create new directory and unpack odbg110.zip - now you can start!

Pop-up menus display only items that apply. Frequently used menu functions:

Function	Window	Menu command	Shortcut
Edit memory as binary, ASCII or UNICODE string	Disassembler, Stack Dump	Binary|Edit	Ctrl+E
Undo changes	Disassembler, Dump Registers	Undo selection Undo	Alt+BkSp
Run application	Main	Debug|Run	F9
Run to selection	Disassembler	Breakpoint|Run to selection	F4
Execute till return	Main	Debug|Execute till return	Ctrl+F9
Execute till user code	Main	Debug|Execute till user code	Alt+F9
Set/reset INT3 breakpoint	Disassembler Names, Source	Breakpoint|Toggle Toggle breakpoint	F2
Set/edit conditional INT3 breakpoint	Disassembler Names, Source	Breakpoint|Conditional Conditional breakpoint	Shift+F2
Set/edit conditional logging breakpoint (logs into the Log window)	Disassembler Names, Source	Breakpoint|Conditional log Conditional log breakpoint	Shift+F4
Temporarily disable/restore INT3 breakpoint	Breakpoints	Disable Enable	Space
Set memory breakpoint (only one is allowed)	Disassembler, Dump	Breakpoint|Memory, on access Breakpoint|Memory, on write
Remove memory breakpoint	Disassembler, Dump	Breakpoint|Remove memory breakpoint
Set hardware breakpoint (ME/NT/2000 only)	Disassembler, Dump	Breakpoint|Hardware (select type and size!)
Remove hardware breakpoint	Main	Debug|Hardware breakpoints
Set single-short break on access to memory block (NT/2000 only)	Memory	Set break-on-access	F2
Set break on module, thread, debug string	Options	Events
Set new origin	Disassembler	New origin here
Display list of all symbolic names	Disassembler, Dump Modules	Search for|Name (label) View names	Ctrl+N
Context-sensitive help (requires external help file!)	Disassembler, Names	Help on symbolic name	Ctrl+F1
Find all references in code to selected address range	Disassembler Dump	Find references to|Command Find references	Ctrl+R
Find all references in code to the constant	Disassembler	Find references to|Constant Search for|All constants
Search whole allocated memory	Memory	Search Search next	Ctrl+L
Go to address or value of expression	Disassembler Dump	Go to|Expression Go to expression	Ctrl+G
Go to previous address/run trace item	Disassembler	Go to|Previous	Minus
Go to next address/run trace item	Disassembler	Go to|Next	Plus
Go to previous procedure	Disassembler	Go to|Previous procedure	Ctrl+Minus
Go to next procedure	Disassembler	Go to|Next procedure	Ctrl+Plus
View executable file	Disassembler, Dump, Modules	View|Executable file
Copy changes to executable file	Disassembler	Copy to executable file
Analyse executable code	Disassembler	Analysis|Analyse code	Ctrl+A
Scan object files and libraries	Disassembler	Scan object files	Ctrl+O
View resources	Modules, Memory	View all resources View resource strings
Suspend/resume thread	Threads	Suspend Resume
Display relative addresses	Disassembler, Dump, Stack	Doubleclick address
Copy	Most of windows	Copy to clipboard	Ctrl+C

Frequently used global shortcuts:

Ctrl+F2	Restart program
Alt+F2	Close program
F3	Open new program
F5	Maximize/restore active window
Alt+F5	Make OllyDbg topmost
F7	Step into (entering functions)
Ctrl+F7	Animate into (entering functions)
F8	Step over (executing function calls at once)
Ctrl+F8	Animate over (executing function calls at once)
F9	Run
Shift+F9	Pass exception to standard handler and run
Ctrl+F9	Execute till return
Alt+F9	Execute till user code
Ctrl+F11	Trace into
F12	Pause
Ctrl+F12	Trace over
Alt+B	Open Breakpoints window
Alt+C	Open CPU window
Alt+E	Open Modules window
Alt+L	Open Log window
Alt+M	Open Memory window
Alt+O	Open Options dialog
Ctrl+T	Set condition to pause Run trace
Alt+X	Close OllyDbg

Frequently used Disasembler shortcuts:

F2	Toggle breakpoint
Shift+F2	Set conditional breakpoint
F4	Run to selection
Alt+F7	Go to previous reference
Alt+F8	Go to next reference
Ctrl+A	Analyse code
Ctrl+B	Start binary search
Ctrl+C	Copy selection to clipboard
Ctrl+E	Edit selection in binary format
Ctrl+F	Search for a command
Ctrl+G	Follow expression
Ctrl+J	Show list of jumps to selected line
Ctrl+K	View call tree
Ctrl+L	Repeat last search
Ctrl+N	Open list of labels (names)
Ctrl+O	Scan object files
Ctrl+R	Find references to selected command
Ctrl+S	Search for a sequence of commands
Asterisk (*)	Origin
Enter	Follow jump or call
Plus (+)	Go to next location/next run trace item
Minus (-)	Go to previous location/previous run trace item
Space ( )	Assemble
Colon (:)	Add label
Semicolon (;)	Add comment

Author: BoomBox
Another OllyDbg modification, mainly changed for aesthetic reasons in an XP styles format.
Скачать: Odbg110_BoomBox.rar

Author: Esp!oN Le rAvaGe
Some useful stuff were included, like scripts and plugin's.
Скачать: OllyDBG_CiM's_Edition.rar

Author: KOrUPt
Improvements include added stealth capabilities and improved visuals along with a few other tweaks.
Скачать: OllyDbg_Dark_Olly.rar

Author: Diablo
Its mainly got a few aesthetic changes to the layout plus it includes all the basic plugins and scripts to get a first time user up and running.
Скачать: Odbg110_Diablo's_Edition.rar

Author: Angel-55
This version of OllyDbg is moded to be undetectable by protectors or protecting formulas, it is fast and with most needed plugins for everyday cracking! A few fixes where done, some where reported by the users thanks to them some changes in code for hidding and of course speed is as always even or better..... DLL loader was added since first version hadn't one, added plugins and updated osme old version with newer ones..... Most important to note i add a new plugin manager to this package that works on DeFixed only now instead of deleting your plugins you can easly choose which to disable and which to use and return them back too without any problem.
Скачать: Odbg110_FOFF_Team_Edition_v2.0.rar

Author: Sacrafice
HanOlly.exe + HanOlly.dll - [Themida 1.9.5.0]
- This is a custom Olly and Plugin that defeats Themida 1.9.5.0 Anti-Debugger checks.
- Olly is modified the least amount possible, only bypasses debugger checks, and nothing more, very close to original 'clean' olly.
Скачать: Odbg110_HanOlly.rar

Author: Life Engines
This tool can let you debug a client process as a normal process, you can use normal debugger (exp llydbg) to debug the parent process at the same time.

Скачать: Odbg110_LifeODBG_v1.4.rar

Author: Unknown Author
A version of OllyDbg specifically modified to allow debugging of Themida protected applications.
Скачать: Odbg110_9in1_for_Themida.rar

Author: Shadow
Apart from a couple of aesthetic modifications Shadow's Olly modification has quite a few bug fixes and changes. Not much is known about exactly what changes have been made but it is regarded as being one of the better modified OllyDbg versions available.
Скачать: Odbg110_Shadow.rar

Author: Unknown Author
A version of OllyDbg specifically modified to allow debugging of VMProtect protected applications.
+ latest version of StrongOD
Скачать: OllyDBG_VMP_Edition.rar

Author: WiKiNG
Another modified version of OllyDbg 1.10.
Скачать: Odbg110_YPOGEiOS.rar

Author: DeRoX
- New look
- Modified code for almost perfect hiding
- Modified code for expanded windows
- Modified code for %s overflow RCE exploit
- Modified code to make symbols load properly
- OllyDRX Plugin Patcher
Скачать: Odbg110_OllyDRX_Lite.rar

Author: Shaddy
Portable version. No need configurations.

Ollydbg For Macvirtuallasopa Free

Скачать: Odbg110_Portable_OllySnD.rar

Ollydbg For Macvirtuallasopa Full

Author: phpbb3
OllyDbg moded for ExeCryptor & THEMIDA
- Add the possibility of deleting all points of stopping Remove all breakpoints
- Auto path UDD & plugin
- Reference search directly from the toolbar
- Show offset in status bar
- Amendment to show the number of additions to the list
- Additions located
Скачать: Odbg110_RAMOllyDBG_v1.1.rar

Author: Sabre
This version has been modded to work with Themida and EXECryptor. It also has cosmetic changes to make the design and layout of OllyDbg more appealing.
Plugins and scripts provided in the archive for use on the above mentioned protectors.
Скачать: Odbg110_Sabre-Gold_Edition.rar

Author: Unknown Author
Скачать: Ollydbg_The0DBG.rar

Author: AnTiCDLoCK
A nice modification of the original OllyDbg 1.10 engine. Contains; a quick breakpoint feature, common and popular plugins, toolbar, extra features and slight visual changes.
Скачать: Odbg110_UST_2bg.rar