Commercial defrag utilities for Windows

Commercial defrag utilities for Windows:

* Abexo Defragmenter Pro Plus [review: thumbs down] $34.95
* Ashampoo Magical Defrag [review: thumbs down] $14.99
* Buzzsaw (on the fly defragmenter) and DIRMS (removes tiny spaces) [article] $10 for 5 licenses.
* Defrag-A-File [review: thumbs down] $7.97
* DefragMentor Outlook Accelerator 2.0 [review: thumbs down] $19.95
* DefragMentor Premium $24.90
* Defrag Timer 1.1 $19
* Diskeeper Pro Premier 2007 [review: thumbs down] $49.95/$99.95 [benchmark] no longer sold.
* Diskeeper Pro Premier 2008 $49.95/$99.95. First Impressions of DK 2008 and preliminary results. [benchmark]
* hsDefragSaver free/$29.95
* Mindsoft Defrag $34.95
* mst Defrag [review: thumbs down] $15.90/$29.90
* Norton Speed Disk - part of Norton SystemWorks [review and benchmark] $49.99 (basic)/$69.99/$99.99 (premier)
* Nova Development - Disk Accelerator Pro $39.95
* O&O Defrag 10 [review:thumbs up] [review: version 8.6] $44.95 [benchmark]
* Paragon Total Defrag 2007 [review: thumbs up] $29.95
* PC Mesh Defrag for Windows 4.0 $19.95
* Power Defrag $29.95

* PerfectDisk 8 [review version 8: thumbs up] [PerfectDisk blog] $39.99
Best Commercial Defrag Program winner. [benchmark]

* PerfectDisk Rx Suite $29.99 [benchmark]
* Puran Defrag 4.0 [review 3.0: thumbs up] $24.95 - $19.95 special offer. [benchmark]
* Rapid File Defragmentor $14.95
* UltimateDefrag [review: thumbs up] $39.95 [benchmark]
* Vopt [review: thumbs up] $40 [benchmark]
* Winternals Defrag Manager 4.0 no longer sold

Freeware defrag utilities for Windows:

* Auslogics Disk Defrag [benchmark]
* Contig* [article]
* Defraggler [first test] still in beta, review pending.
* DefragMentor Lite CL
* fragdown 2.4
* IOBit SmartDefrag 3.1 beta [review: thumbs down]

* JkDefrag* [review version 3.8: thumbs up] [links] (GPL)
Best Freeware Defrag Program winner. [benchmark]

* Microsoft's Windows Disk Defragmenter [benchmark]
* Multiple Applicator 6.8
* PageDefrag* [see JkDefrag review]
* Partition Logic [short review]
* Power Defragmenter GUI [review: thumbs up]
* Rapid File Defragmentor Lite
* Puran Defrag 1.1 no longer available: see 3.0 above.
* SpeeDefrag
* SpeedItUp FREE
* UltraDefrag 1.0.5 [review:thumbs down]
* UnityPro Disk Idle Optimiser [benchmark]
* WinContig 0.75 [review: thumbs down]
* Windows PowerTools 1.3 [review: thumbs down]