Free system 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

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.

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

By:Dirceu Veiga
Icons in package: 84.

System 47 is a nice screensaver that will display Star Trek LCARS interface on your screen with various interesting animations. More animations will be constantly added. So visit System47 web site often to download the latest version.
Enhancements:
- Recompiled. This version now works on either Intel-based or PowerPC-based Macs.

Too Red System Icons is a set of 83 icons that are primarily all in the color of red. A preview of a few of the icons is shown below.

System Gauges is a free Yahoo! widget that shows your CPU, memory, and hard disk utilization, and your WiFi signal strength.

System requirements:
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Enhancements
- Pretty much the final version. It runs on Windows [and OS X -Editor] and thats what it needed to do.

Requirements:
Mac OS X 10.0 or later.