O&O Defrag

A commercial Windows defragmenter that optimizes drives in the background to speed up startup.

PaidProprietaryWindows
Official websiteoo-software.comDownload pageoo-software.comDocumentationdocs.oo-software.com

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About O&O Defrag

O&O Defrag is a drive optimization tool for Windows from O&O Software, the company behind O&O DiskImage and O&O ShutUp10++. It runs in the background and reorganizes data on your drives so the PC and programs start faster, without you scheduling it by hand.

The download page offers the current Pro edition. Documentation, release notes and an archive of older versions are on the O&O site. It suits Windows users who want optimization to run automatically rather than through the built-in Windows tool.

Strengths

  • Optimizes drives automatically in the background
  • Maintained by an established Windows software vendor
  • Documentation and release notes published online

Limitations

  • Windows only
  • Paid software
  • Little benefit over the built-in Windows optimizer on many modern systems

Details

Pricing
PaidCommercial software sold by O&O Software.
License
Proprietary
Developer
O&O Software GmbH
Platforms
Windows
How it runs
Downloadable app
Works offline
Yes
Best suited for
Windows users who want drive optimization handled automatically
Last verified
Added
Provenance
Facts checked against the developer's own pages and store listings, 1 sources on file.

Alternatives to O&O Defrag

Compare all

Software that can replace O&O Defrag for an important use case, and what changes if you switch.

  • UltraDefrag

    A portable disk defragmenter for Windows with file placement, disk health monitoring and cleanup tools.

    PaidProprietaryWindows

    UltraDefrag is also commercial and Windows only, with a portable edition, per-file defragmentation, disk health monitoring and Windows update cleanup.

  • Wise Disk Cleaner

    A free Windows tool that removes junk files, wipes browser traces and defragments disks.

    FreeProprietaryWindows

    Wise Disk Cleaner is free Windows software with a built-in defragmenter plus junk and browser trace cleanup, but no automatic background optimization is listed.

Similar software

Related functionality, not necessarily a direct replacement.

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