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Year released:
[www].se [ftp].se [mirror].us
iDefrag_1.7.3_OS_X_10.3.sit (4.88 MB)
For Mac OS X
[www].se [ftp].se [mirror].us
iDefrag_2.0.5_OS_X_10.4-10.5.sit (14.87 MB)
For Mac OS X
[www].se [ftp].se [mirror].us
iDefrag_2.2.8_OS_X_10.6-10.9.sit (18.64 MB)
For Mac OS X
[www].se [ftp].se [mirror].us
iDefrag_5.1.3_OS_X_10.10-10.11.sit (14.19 MB)
For Mac OS X
[www].se [ftp].se [mirror].us
iDefrag_5.3.1_OS_X_10.12-10.13.sit (13.79 MB)
For Mac OS X
Guides on emulating older applications

Defragment and optimize your disk for improved performance.

Features from iDefrag in 2006:
-Send email notifications or make noises when done.
-Supports HFS and HFS+ (Mac OS Extended).
-Supports case sensitive and journaled filesystems.
-Supports adaptive hot file clustering (“Hot Zone”).
-Four powerful defragmentation algorithms:
-Compact data, moving all free space to one place.
-Optimize filesystem metadata.
-On-line defragmentation.
Defragment whilst your disk is mounted.
-Advanced programmable optimization.
Rearrange your disk the way you want.
-B-Tree metadata file compaction/optimization support.
-High performance user-defined file classification engine
-Per-block and accurate whole disk display.
- Detailed statistics so you know whether you need to optimize.
- Inspector allows you to view details of individual extents/files.
- Quickly jump to specific files to examine them in more detail.
- Altivec accelerated display for improved performance.
- Auto-update feature ensures you always have the latest version.
- AppleScript support.

NOTE: Do not use iDefrag on an APFS volume and/or an SSD.


iDefrag_1.7.3_OS_X_10.3.sit contains the application (.dmg) and license file.
iDefrag_2.0.5_OS_X_10.4-10.5.sit contains the application (.dmg) and license file.
iDefrag_2.2.8_OS_X_10.6-10.9.sit contains the application (.zip) and license file.
iDefrag_5.1.3_OS_X_10.10-10.11.sit contains the application (.dmg) and license file.
iDefrag_5.3.1_OS_X_10.12-10.13.sit contains the application (.dmg) and license file.

This software and its licenses have been made available for free by its developer and is archived on Macintosh Garden in case the Coriolis website ever goes down.

Architecture: PPC x86 (Intel:Mac)


OpenSourceMac's picture
by OpenSourceMac - 2020, January 15 - 9:34pm

***Update to This***
I used CCC to copy the data from the corrupted drives and it was only two files that were damaged (maybe were already) and the system did run faster - so as is the never-ending truth, have backups before using this.


Just a warning to everyone on this app. I've had considerable data-corruption on two different drives I've used it on. Ironically, the drives/systems don't seem to know it and seem to work fine, but neither one can be back-up now.