Windows only 
I’ve always been pretty good about defragmenting my computer, and I think it was a good choice when Microsoft decided to make defragmenting PC’s a scheduled job on Vista and Windows 7 by default. For some users the built-in defragmenting is still not good enough, and that’s where third-party apps like O&O Defrag come into play.
O&O Defrag is normally a $50 app, but if you don’t mind running a slightly older version you can get it for free. All you have to do is provide your name and email address to get O&O Defrag 10 Professional (released in May 2007). The good news is that it comes in both 32-bit and 64-bit versions, and is available for Windows 2000/XP/Vista. I installed it on a Windows 7 machine and didn’t really see any issues, but that is not an “officially” supported operating system for this particular version of their software.
If you decide you want the latest version of their software you can also use this as a way to save some money. Once you get your serial in an email (which you should receive almost immediately after filling out the form) you can then use that to purchase an upgrade to the latest release for $30 (40% off).
Grab O&O Defrag 10 Professional for Free (Windows 2000/XP/Vista)
Yay, thanks!
The serial sent also works for the german version.
never got the email. tried twice. very dissapointing..
Is it better than Defraggler? Does it improve the performance visibly?
I normally wipe my computers clean often enough where I wouldn’t see the true benefits of a defragment application, so I’m not completely sure. A lot of people swear by this app though.
I also did not get any email.. very very dissapointiung . . .
dudes, now it works!
got the mail with serial, great program
Guysguysguys,
I’m not sure if everybody will get this, but since I had to register my emailadress with O&O they have/had me in their newsletter.
Today I got an mail telling me that I could order the O&O Defrag Pro 12 (!) upgrade for just $14,95.
I smiled and ordered.
So: thanks Cybernetnews for giving me O&O Defrag Pro 12 for just $14,95 (that’s a ~70% discount, YAY)
Glad we could help!
Took a while but I got my key. I used a disposable email as I always do so they don’t spam me or sell my info to other spammers.
All academic. I’m just glad I did a full backup before I tried this defragger, as it wrecked my Vista boot partition. No real harm done other than wasting time, but I won’t be in a hurry to try any more O&O products…
I’m sure O&O would have been willing to help troubleshoot the problem
Unlikely, these programs all use the built-in Windows APIs to move files. I’m not sure at all how it could have wrecked your boot partition at all. Most likely something else to blame (or just someone trying to tarnish O&O products)