Free system defrag software for mac

System Manager came into being from a desire to roll the functionality of several of my favourite apps into one app, increase the functionality of a few of them, and free up some Dock space. Other functions were, and will be, added to increase its overall usefullness such as system log monitoring, file/folder permissions control, trash management, and possible improvements to Process Monitoring to name a few.
System Manager combines some of the best features from a variety of other monitoring apps all rolled into one application.
Main features:
- CPU Usage (Dual)
- System Load levels
- Memory Usage
- Network Activity
- Process listing with kill and renice a process
- System Preference Pane launching
- Uptime display
- IP Number display
- Classic status display in MenuBar, Dock, or any graph
- Launch and Shutdown Classic
Enhancements:
- you can disable CPU Monitor temp checking to improve performance
- you can show the CPU Monitor temperature in Celsius or Fahrenheit
- fixed a CPU Monitor ghosting remnant when drawing with Transparancy
- added pref to show/hide large CPU percentage readout seperately
- added pref to use non-transparent CPU border alarms
- dded transparent background option to the Load Monitor
- etwork monitor is now switchable amongst installed interfaces
- added Dock icon menuitem to select monitored network interface
- network data in and out values/plots/scale now reflect per sec values
- network refresh rate is adjustable instead of hard wired 2 seconds
- fixed a memory leak in the network monitor
- uptime monitor now remembers, displays and saves longest running uptime
- user definable large display font on the General preference tab
- moved the "Dock Icon Shows" radio buttons to the General pref tab
- fixed display of Classic status indicator when using graph transparency
- other minor performance improvements

Enhancements:

• Compatible with Xsan 1.1.

Requirements:

• Apples Xsan 1.0 must be installed on the computer.

iSimple System Full is an icon set containing 84 icons representing iPod, Mac minis, folders and more.

By:Dirceu Veiga
Icons in package: 84.

Requirements:
System 7.0 or later.

Lego System is Seans first ever iconset is a major success! Generous with 60 icons, you can transform your whole system into a crazy legoland!

All icons are aquafied and look their best in 128x128 at 32bit mode.

Completly freeware.

This definitive set of System Replacement Icons, SystemApples , will be the only ones your Macintosh will everneed. 93 System Replacement Icons and 20 attractive folders guarantee you the Ultimate desktop. A preview of a few of the icons are shown below.