O&O Defrag Professional

11.1.3362 (November 4, 2008)

Windows 2000/Vista/XP / Shareware; $49.95 / 22,815 downloads

O&O Defrag puts fragmented files together and maximizes your network's speed. Defragmentation of large networks becomes easier than ever before: centralized client installation with drag & drop, execution, and scheduling of defragmentation jobs for single computers or free definable groups and much more. Professional Edition unlocks the hidden Performance of your computer. This software will optimize your hard disk securely repacking fragmented files together for more efficiency. In addition, it boasts outstanding usability and a myriad of important functions not found in any other defragmentation software platforms on the market today.

Latest Reviews

  1. Undesired Username

    11.1.3362 (Dec 5, 2008)

    An outstanding defragger, but for the bugs. I kept having problems with the service not talking to the GUI, or even losing its brains completely, doing nothing.

    Poor kids and cheapskates always slam commercial software in favor of half-baked freeware, but it makes no difference.

    O&O Defrag doesn't "open online connections" for nefarious purposes. The defrag service talks to the GUI by way of a TCP port. This is a common practice for software that combines a background service with a front-end GUI. It's also mentioned in the help file.

    O&O Defrag doesn't slow anything down. In fact, if you enable "AutoSense", it stays out of your face and does its thing without driving you nuts. Compare that to freeware crap that not only requires you to run it manually, but slows your system to a crawl while it runs.

  2. oompoop

    11.1.3362 (Nov 23, 2008)

    ... a lot of whistles, pipes, bells & drums, it may work well, but I don't like proggies installing an online connection.
    So sorry, but ...

  3. De Julien

    11.1.3362 (Nov 7, 2008)

    Slow, extremely dumb, and system respons actually worse than a fragmented drive.

  4. Beasley66

    11.1.3362 (Nov 7, 2008)

    Whatever 'shareware' defragmentation software you choose, unbiassed reviewer ALL show that they actually slow the performance down. Don't fall for their lies and marketing talks.

  5. Aegis69

    11.1.3362 (Nov 4, 2008)

    Nothing but marketing releases since version 8.5

    Now that ultradefrag has boot time, O&O is no longer relevant.