List of defragmentation software

The following is a list of notable file system defragmentation software.

Commercial

• Disk Defragmenter, by Diskeeper Corporation and Microsoft, included in most versions of Windows
• Diskeeper, by Condusiv Technologies, for Windows XP or higher
• Norton SpeedDisk (a component of the Norton Utilities bundle), by Symantec, for DOS and Windows
• Norton SystemWorks (Speed-Disk), by Symantec, for HFS (Mac OS X) and HFS Plus
• O&O Defrag, by O&O Software, for Windows 2000, XP, Server 2003, Vista, Server 2008, and 7 (including 64-bit versions)
• PerfectDisk, by Raxco Software, for Windows 2000, XP, Server 2003, Vista, Server 2008, and 7 (including 64-bit versions)
• UltimateDefrag, by Disktrix, for Windows 2000, XP, Server 2003, Vista, Server 2008, and 7 (including 64-bit versions)
• Vopt, by GoldenBow, for Windows 2000, XP, Server 2003, Vista, Server 2008, and 7 (including 64-bit versions)

Shareware

• Auslogics Disk Defrag, by Auslogics Software Pty. Ltd., for Windows XP, Server 2003, Vista, Server 2008, and 7 (including 64-bit versions)

Freeware

• Contig, by Windows Sysinternals, for Windows XP, Server 2003, and higher^[1]
• Defraggler, by Piriform, for Windows XP, Server 2003, Vista, Server 2008, and 7 (including 64-bit versions)
• DiskTune, by DIY DataRecovery, for Windows XP, Server 2003, Vista, Server 2008, and 7 (including 64-bit versions)
• MyDefrag, by Jeroen Kessels, for Windows 2000, XP, Server 2003, Vista, Server 2008, and 7 (including 64-bit versions)
• PageDefrag, by Windows Sysinternals, for Windows XP (32-bit), Server 2003 (32-bit), and higher
• SmartDefrag, by IObit, for Windows 2000, XP, Vista, 7 and 8

Open source

• JkDefrag, by Jeroen Kessels (discontinued but still available; replaced by free but not open source MyDefrag)
• UltraDefrag, by Dmitri Arkhangelski, Justin Dearing, and Stefan Pendl, for Windows NT 4.0, 2000, XP, Server 2003, Vista, Server 2008, and 7 (including 64-bit versions)

See also

• Comparison of defragmentation software

References