Memory Defrag 1.5 for Mac could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. This software for Mac OS X was originally developed by ISALabs. The most popular versions of the tool are 1.3, 1.2 and 1.1.
This application can be installed on Mac OS X 10.7 or later. The software lies within System Tools, more precisely System Optimization. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
Memory Defrag is the ultimate tools for your Mac. Either you have a huge amount of ram or the standard supplied, you will find a big help using Memory Defrag.
Instantly check the available free memory, using the accessibility status bar icon.
If you need more free ram, just defrag and in a while you will see your available ram growing.
You may want to check out more Mac applications, such as Memory-Map, Memory Cleaner or Memory Free 2, which might be related to Memory Defrag.
System Optimization
HDD Management