Licence: Shareware ($30)
Version 2.1.4 | Release Date: 2012-09-18 | Download

Changes since version 2.2.3:

- Improved error message when Quick (on-line) algorithm encounters Time Machine backups.
- Some accessibility improvements.
- Fixed running on 10.5 and some 10.6 configurations.
- Fixed a crasher that you could get if you tried to create a recovery disk on certain disks.
- Fixed a hang that could occur in some rare error scenarios.
- Fixed a farily rare hang that you could get whilst running in the exclusive restart mode.

Version 2.1.1 | Release Date: 2011-10-20 | Download

Support for Lion (and the recovery partition).

Version 1.6.9 | Release Date: 2009-06-07 | Download
  • Fixed a problem introduced in 1.6.8 where iDefrag was unable to move hard link folder files in “Quick (on-line)” mode.
  • Added compatibility for PGP whole disk encryption.
  • Updated the error messages for the on-line defrag routine.
  • Prevent iDefrag from appearing to hang on completion when DNS is misconfigured (obviously it's better to fix your DNS settings...).
Version 1.6.6 | Release Date: 2008-06-18 | Download

Changes in this release:

  • Improved appearance and behaviour of lock button.
  • Applications are now digitally signed.
  • Fixed a problem where iDefrag could hang when commencing the On-line algorithm.
  • Increased the speed of the Compact algorithm for some scenarios.
  • Fixed some minor user interface transgressions.
  • The workaround for Leopard’s AHCI driver bug is now disabled when running from 10.5.3 or later.
  • Fixed a problem where the algorithm or class-set drop-down boxes on the toolbar would be incorrectly disabled after defragmenting.
  • Fixed an interaction problem with SMART monitoring utilities (such as the iStat applications and widgets); iDefrag will no longer report that SMART monitoring is not possible when running those applications.
Version 1.6.1 | Release Date: 2007-01-11 | Download
No changes specified
Version 1.5 | Release Date: 2006-07-11 | Download
No changes specified