Free O&O Defrag 11 Professional Edition!

Defragging your hard drive regularly has it’s benefits. The time it takes to load files, save files, etc. reduces; your computer performance increases (to an extent). There are many freeware defrag programs available out there (many of them top-notch quality such as Auslogics Disk Defrag), but here is a free promotion of a commercial defragger, O&O Defrag 11 Professional Edition.

As per the developer, these are the features of O&O Defrag 11 Professional Edition:

O&O Defrag 11 includes an array of functions that a really good defragmentation software should offer, ranging from a fully automated defragmentation function to an expert settings option.

  • Zone filing for optimal organization of files
  • Three additional defragmentation methods (eight methods in all)
  • Improved: even better at eliminating high levels of fragmentation
  • Background monitoring: your system is constantly kept at its peak
  • Screen Saver Mode: optimizes your PC whenever it’s not being used
  • O&O OneClickDefrag for fully automatic configuration
  • Job Assistant for scheduling defragmentation

The latest version of O&O Defrag Professional Edition is v12 which usually costs $49.95 (USD), but you can get version v11 for free! However, I suggest you take a quick glance at a review written on it before getting it. I have not personally used O&O Defrag 11 Professional Edition so I can’t vouch for how good/bad it is but the review is very negative, fyi.

That being said, to get O&O Defrag 11 Professional Edition for free, follow these simple directions:

Version being given out for free: v11.6.4199

Free updates: No

Supported OS: Windows 2000-Windows Vista

  • Visit the registration page and register. The fields “Email”, “Name”, “Salutation”, and “Country” must be filled in. O&O sends regular newsletters regarding their products, so you may consider using a spam email address.
  • Check the inbox of the e-mail you registered with. There should be an e-mail from “O&O Register ( ” with the subject of “Your license of O&O Defrag 11 Professional Edition”:

In the e-mail you will find your registration information.

Keep this e-mail open because you will need that registration information soon.

  • Download (32-bit download | 64-bit download) and install O&O Defrag 11 Professional Edition.
  • After installation, run O&O Defrag 11 Professional Edition. You will be prompted to register the software. Enter the registration information you received in the e-mail, and register it.

Enjoy your free copy of O&O Defrag 11!

[via For-Free-On-Internet]

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  • The round of applause for your weblog.Really thanks! Fantastic.

  • internetexplorer

    “offer has expired” (I’m not surprised, considering that it was published here about a year or so ago!). :(

  • Johnny

    Why is it that version 10 installs and runs on Win7 with not a problem, but version 11 even under compatibility mode says it will not install under the same OS?

  • Francis

    Has anyone tried out O&O Defrag by just using its context menus? I can’t make it work. Whenever i click any of the options O&O defrag just loads up but doesn’t do anything.

  • Thanks for the great guide!

    I use O&O Defrag myself but unfortunatly I paid for it to review it! It is very good software indeed one of the best features is the screen saver idle mode were it defrags when you are idle!

    There are many freeware applications but none compare to O&O Defrag that I’ve found its simply great software.

    I’m going to try to get the software for free on my brothers computer, thanks for your great tutorial!


  • I use “Puran Defrag”. It’s a really good program, simple in design, but defrags and packs everything very well in less than 20 – 10 minutes!

    The best part is that it’s a freeware!



  • Ramesh Kumar

    @megaman – I share with you the same regret wrt IObit Smart Defrag i.e. why it still shows a small residual percentage – undefragged – e.g. 5% or whatever. That’s one rant I share with you :(

    @harris – Entirely agree on your comment no.10. I wish version numbering is accompanied with a changelog which explains that if a version has jumped up by a “quantum” number what is the “quantum” new functionality it provides. It should have an elaborate changelog. Otherwise it looks like a sales gimmick :)

    @Toast (no.12) & Happy Person (no.26) –
    I quote Toast – “Should I try compatibility mode with this installer? Or would doing that to a defragmenting tool not meant for the newer OS possibly cause damage to my system?”. I am as concerned as you are. Shrewd query. :) I share your puzzlement along with you. After all, one of the most important tasks of an OS is “file management.” Messing that up could mean messing up big time……real big time. :D

    @Happy Person – I quote – “After installation, however, you won’t need to worry about running the program using any compatibility mode. Just run it regularly”.

    I’ve never run an app on compatibility mode as I remember reading somewhere (I unfortunately do not recollect) :( that running an app on compatibility mode while it is offered as an option should never ever be selected as an option.

    I wonder in any case if “compatibility option” is at least to be avoided in certain “genres of apps”. Meaning e.g. its okay for editing an image file provided the image is not important one but it might be risky for a genre as crucial as disk defragging. YMMV. :) If at all “compatibility mode” is used, perhaps its safer to use it for a lower os rather than a higher os version…….even though it allows you to do both. Even this if only both OS versions fall into the same runtime genre e.g. win7 to vista but not vista to Xp

    If a file is lost, just a file is lost, but if an entire drive is lost every file in it is lost. :( So is one supposed to do disk backup before every disk defrag just to be safe. Somehow that idea does not appeal to me. :) YMMV

    Consequently I am still hemmed in for the immediate present with Smart Defrag & its residual unfragged defragmentation of 5% or so :(
    Ramesh :)

  • Ramesh Kumar


    Bullseye! To be honest I still do not know what to choose. And this genre is an extremely sensitive one – hard disk defrag. Hence following this thread closely

  • Ramesh Kumar

    @MikeR – that is as comprehensive & as constructive a comment I’ve ever seen.

    A beautiful 3 pronged mantra of pure sense i.e. A) Not to get “blindly swayed” by going for an app written by a large faceless corporation B)Consider peer options offered by open source; but being alive to open source coding getting snitched by opportunistic coders c)Consider choosing an app coded by a civic minded coder (& donate to such guys) rather than blindly choosing apps written by one who is “only” commercial minded. Every one of the examples & developers cited rang true.

  • Pwnana

    Am I the only one who likes O&O? Im using v12 which I got from a different promotion and it has gone above and beyond. But there are some huge improvements from 11 to 12, like zone filing, so I cant really speak for this. It keeps my hard drive below 1% fragged for months at a time without actually having to defrag the whole system, and I like getting results without the work =D.

  • harris

    @adrian…a reply to your rather laconic response to my remarks about o&o defrag v.11 not being win 7 compatible. it is not necessary to buy v.12 as v.10, an earlier version runs quite wonderful under win 7. i do find it a bit peculiar that an earlier version supports a newer OS and a later version doesn’t…

  • giovanni

    And to defrag your REGISTRY system:

    REGISTRY MECHANIC 8 (1 year FREE license code ==> worth 30 $)


  • Doru

    Defragmentation is good but very very slow.I put at complect acces.Uniblue is more more faster.So i will remain at uniblue.

  • Happy Person (Inas)

    Hi all – here’s my update.

    I applied for (and received) my defrag pro 11 license code today. The company’s response time is very quick. It was slower over the weekend because (apparently) they are off on the weekends, which is very understandable. The company also provides very clear, detailed, helpful information on what to enter in the registration fields.

    One very important note: For users who have Win-7 systems, you’ll need to run the “installer” in Win2000 compatibility mode to get past an error message (during installation) that the program will not install on the win-7 version of windows (or something to that effect). I’m simply paraphrasing.

    After installation, however, you won’t need to worry about running the program using any compatibility mode. Just run it regularly.


  • Doru

    In final after 1 day i received the licence key.Thank.

  • Happy Person

    I applied for the LED Drive 3 “free” program on Saturday, and just today received the license key, so it may take them a day or two to send to folks the license code for the DeFrag 11 Professional Edition.

    By the way, I also applied for the DeFrag 11 license key, and will keep everyone posted on when I receive it.

  • Achim

    I also try since 18 hours to get a key. No email, nothing. I tried different Names, emails and IP’s. Does anybody else having this problems?

  • Adrian

    @dummy: Yes, you’re correct, but I think that the difference is really between different systems and not different builds/versions of the program.

  • Adrian

    @harris and Toast: The OS supported above clearly says that only Windows 2000~Vista is supported. If you want support for Windows 7, buy O&O Defrag 12 Pro or try other defrag software.

  • dummy

    That Danish guy was testing an early (and therefore buggy) build of O&O Defrag 11…

  • dummy

    Hi Ashraf

    The first sentence of your article correctly: Defragging your hard drive regularly has its benefits.


  • Ashraf

    @Bruce Fraser: I run dotTech with strong values and morals. Part of those values and morals involves properly crediting the source, if applicable, whoever that source may be. I have no desire to benefit at the cost of others without giving their fair due, despite what others may want you to believe.

    @Everyone: As far as I know, this software is not supported in Windows 7 (hence why I limited the “Supported OS” to Windows Vista). It may work if you run it in compatibility mode, but I wouldn’t bother at that point; just use Auslogics Disk Defrag, or another freeware.

  • Bruce Fraser

    Oops! Sorry for failing to give proper credit to you.

  • Adrian

    @dralokmisra: I didn’t encounter this problem. What email service were you using? GMail, Yahoo, Hotmail?

    @ Everyone else: Not every name starting with an “A” means that it’s written by Ashraf. LOL!:)

  • dralokmisra

    Dear Ashraf, the link that you provided in the article above that points to the registration page for the O&O software.I visited that page and filled the form providing them with a real working email address and after I hit the submit button I even received a confirmation message yet nothing appeared in my email…I repeated that same process for three other email IDs for my wife and son..still nothing happened…can you tell me why this is so?

  • Doru

    Uniblue is free now at this promotion.Only register and will have serial number.

  • Doru

    I try 3 times to register,it say that is ok but nothing come to me with email.Next i try:Uniblue diskRescue 2009(comercial version at Softpedia).It work very good if you free(allow) from network connection(firewall,antivirus).It make a very good job and is very fast.If you verify with Program disk defragmentation(Analyze)you will see that is almost perfect.It is a promo and must to register to give serial number and soft download and it give a licence for 1 year.But the best defragmentation tool from the World remain Paragon Total Defragmentation in version bootable disc.Uniblue have advantage that is very good and work on Windows.

  • Toast

    Ashraf, I can confirm harris’s report. The 64 bit version of O&O Defrag 11 Professional Edition would not install on my Windows 7 64 bit system. Should I try compatibility mode with this installer? Or would doing that to a defragmenting tool not meant for the newer OS possibly cause damage to my system?

  • Parikshit

    I have been using O7O 10 for quite a long [ ever since i got it for free] and have been pretty satisfied with it. Especially the different complete defragementation method works good.
    Thanks for the info ashraf..

  • harris

    ashraf…first of all i’d like to say great site….as for o&o professional defrag v. 11 it doesn’t work on windows 7…i saw that it said it supported vista but assumed that it was an oversight in the article as i have been using v.10 professional for some time and thought i would just get the latest version…after uninstalling v.10, cleaning up the registry and removing the service – o&o is listed as a service and runs at startup and if you switch it to manual the program won’t run – i went to install v. 11 and after a few moments it came up with the notice that v.11 would not run on this OS…i do find this a bit odd and wonder what o&o is up to…one would assume that a higher number version would support a newer OS in the same manner that the older version did…very curious!

  • Ozzie

    Taking a quick break from study … thanks for the heads up, Ashraf! However, as good as O&O products have been in the past (I was surprised to read that review as once upon a time in a galaxy far, far away I used to use O&O), I will probably stick with Smart Defrag, which I have been using for the past couple of years. It’s done me no wrong thus far. Although I confess that thanks to MikeR’s as always beautifully eloquent post, I have a hankering to check out MyDefrag.

    @Bruce Fraser: I think you’ll find that the animosity is one-sided. No one here, to the best of my knowledge, is much interested in that sort of negativity or indeed engages in such site/individual bashing. Live and let live.

    @MikeR: I couldn’t agree more. When I’m looking for a specific type of software, the first place I head is Sourceforge. There is such an incredible array of programs. I have to watch myself though, as I usually get dreadfully sidetracked: “Ooh, this looks good … I wonder what IT does?” And as I said above, you have piqued my curiosity about MyDefrag. When I get some down time, I think I will be checking it out.

    And now, back to the books …

  • megaman

    I use a triple combo. Disktrix UltimateDefrag is my first up. The only problem is that it gets stuck on a file and it won’t budge, forever, from there. Second up is Iobit Smart Defrag. It does a good job, but sometimes my result would still have .05% fragmentation, where I do get 0.00% most of the time. The first 2 would decrease the HD capacity, in some cases. Then I top it off with Auslogics DiskDefrag. Everytime I use DiskDefrag you would see disk capacity rise. Either way, they have their methods of defragging so I use all 3.

  • kingpin

    Discretion is advised before using any Defraggers’ be it paid or free?As for me I will be most probably not using Defraggrers’ in my life bcoz they are just too risky for me, think I stick with Utilites(registery cleaners,etc.)that too b4 backup only!

  • Giovanni (King of Freebies…LOL!)

    Nice FREEBIE!!

    Besides ULTIMATE DEFRAG mentioned above, I would also suggest try the following freeware:

    – Auslogics Disk Defrag

    – IoBit SmartDefrag

    And above all try this pretty unknown (Italian) DEFRAG TOOL called “Pc Optimizer” that works great for me!!

    FULL REVIEW (in Italian language…LOL!) with screenshots here:

    Please use GOOGLE TRANSLATE if you don’t understand the content of that article written by a clever Italian GEEK GIRL of my acquaintance (trust me: she’s as sharp as Ashraf as far as IT matter is concerned….LOL!).


  • Nice one. Especially since i miss the paragon monthly giveaway. There doesn´t seem to be one for february. Now it´s the last day and nothing on the paragon giveaway site. :-(

  • MikeR

    Over the years I’ve run a variety of defrag apps from commercial developers. I haven’t found one that beats JkDefrag. I have found many that get nowhere near it.

    When Jeroen Kessels first released it in 2003 or 2004, can’t remember which, it was a huge step forward in this kind of app. Being Open Source also meant it could be, and was, progressively refined.

    But being Open Source also meant it was as vulnerable as any other OS work to pirating by fast-buck commercial developers. A shame, but that’s how it goes.

    Couple of years back, Jeroen decided to stop making it OS. He also retitled it MyDefrag. But he has maintained his commitment to keeping it free. The link is here:

    Why do I like it?

    Well. I have a thing about faceless corporations and companies. If I can avoid ’em, I will.

    Whereas if I can find a small developer working for the general good of the computer community worldwide, then that’s the one I’ll stick with.

    Thus, for example, Irfan Skiljan, whose little app I embraced from the moment it came out and to whom I’ve donated several times in the past 15 or so years.

    Similarly, Jouni Vuorio (and, latterly, Jan) and the little registry cleaner developed as freeware around the same time as Jeroen Kassels was slogging away on Jvdefrag.

    Now, of course, Jouni and Jan have grown their work into the highly respected jvPowerTools, and run their own company, Macecraft, up there in Finland.

    Helping, via small donations, a small developer with his / her chosen task is — to me — as much a pleasure as is the use of that developer’s software.

    Which isn’t, of course, to say that I then close my mind to alternative offerings. For example, I was amongst the first to donate to Steve Gould and his beautiful little Cleaner freeware. But I don’t use Steve’s software today because CCleaner now out-performs it.

    (Just as an aside: I keep saying references to various utility suites as a means of controlling programs start-up. Er. . . why? CCleaner is now a utility suite in itself.)

    On a slightly arcane note, I don’t use Auction Sentry now in connection with eBay buying (if I’m going to snipe, I prefer the fun of doing so manually.) But when Dan Hite was slaving over there in California to get his software up and running, I was delighted to be one of the early donors to support his early hours labours.

    Looking back over this text, the common thread that runs through it is obvious: in every case, there’s a name to the software. And in every case, there is, or was, a support forum.

    Now compare that to commercial software.

    You’ve often no idea how the software even came into being, still less who owns it. (iObit is the classsic example here: speaking personally, I’ve rarely encountered a more mendacious developer.)

    Support is very often notable only for its absence. And you have no “ownership”, as it were, of the software you’re running. You’re just another user.

    Back, then, to Jeroen Kessel’s MyDefrag. So OK, it doesn’t have a bells-and-whistles interface. Its website isn’t the world’s finest. But, but, but. . .

    By George, it works. And works beautifully. It has ‘shades’ of operation that are user-controllable (unlike many commercial alternatives) and it’s light, fast and — in that it has never, er, “borrowed” code from anybody else — is honest and decent.)

    This post, then, isn’t to knock O&O in any way.

    Rather it’s to say, before any computer user, anywhere, thinks about rushing into the arms of a commercial developer, how about checking out the work of the Open Source / freeware people first?

    In a very real sense, you’ll be closer to them than you are to any of the major companies or corporations. And you’ll also be closer to the actual spirit of the Internet: the exchange of information, the worldwide work for the communal good.

    (And if you think that’s a pipe-dream, think again: TOR, for example, certainly doesn’t owe its existence to any commercial outfit. . .)

    So. . .

    Let’s hear it for the little guys, yes?


  • Bruce Fraser

    Thank-you for giving credit to “4Free.” I am dumbfounded as to the cause of the animosity between you people, but this kind of professional courtesy is the best way to overcome that.

  • jumbi

    the negative review was conducted in a virtual machine.
    Perhaps this may be the reason for the so negative results.
    Are there any other reviews to compare?!

  • OldElmerFudd

    Something happened to O&O software a few years, and it wasn’t for the better, imo. I tried the DriveLED yesterday, and found it lacking in purported uses to the point I uninstalled it.

    I’ve used different defraggers over the years, and currently run the free version of Ultimate Defrag

    You can find it on their site (with searching) and they’ve made it registerware. The Cnet page is a straight download. I like the options and it’s not all that slow. As always, imo.