Free system activity monitor software for mac

Remote Activity is like a distributed version of the Mac utility Activity Monitor: you add your remote hosts (eg clusters, supercomputers, workstations, grids) to it, and it queries them regularly for running jobs, and summarizes the status of all of your calculations in one window.

Out of the box it supports a number of batch systems — SGE, LSF, PBS, and Xgrid — and may also be used with the ps command to monitor interactive runs.

What is Heart Monitor?
Heart Monitor is a bare-bones CPU monitor menu extra that displays a beating heart. As the CPU load increases, the heart beats faster. You can set Heart Monitor to track the User, System, Idle or Nice load. It does not do much else. Uptime, processor info and other tidbits are not displayed. You can set the window level (desktop, normal or floating), and optionally display a small window showing all CPU load averages.
There are many CPU monitors out there that give you plenty of CPU information. This is not one of those applications.
How do I use Heart Monitor?
Simply double click to launch. A heart will appear on your desktop, and a new menu item will appear in your menubar, displaying a percentage. This is the CPU load average for whichever load you wish to track (User, System, Idle or Nice). Use this menu to set the preferences of the Heart Monitor.
How do I quit Heart Monitor?
Simply click on the menu that is displaying the CPU load, and choose "Quit Heart Monitor".
Why doesnt Heart Monitor show the things I want to see?
Because Im not you. And its free. And the source code is available.
Heart Monitor is 159% freeware. You may redistribute the application as you see fit, without notification to myself, as long as no fee is collected.
Enhancements:
- Version 1.3: Universal binary version.

iTunes Connection Monitor Widget allows you to see who is connected to your iTunes shared library and which songs are being listened to.

This Yahoo! Net Monitor widget will show your current network traffic using WMI on Windows and netstat on Mac.

System requirements:
-

Enhancements
- Removed extra Versioncheck.

Activity Widget is a little widget that sits on your dashboard displaying current system statistics.

Main features:
CPU Usage:
- How much processing power your system is currently using at the time. Here, red means most, if not all, system processes are being used. Yellow means about half of the system resources are being used, and green means only some or none of the system resources are being used the current time.
Disk Access:
- Shows activity in the hard drive. Lights up green when files are being written and read. No color-coding here!
Networking Monitor:
- Shows incoming and outgoing packets to the internet. Each button lights up green to show either incoming or outgoing traffic to the internet. No color coding here, either!

iChatMonitor show a small window like MSN Messenger when a contact becomes online, offline, away or idle, with the pseudo and the avatar of the contact.
Enhancements:
- solved bug with "%" in place of "@".
- new preferences window.
- You can now define what service you want to watch (AIM,Jabber Bonjour).

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

WatchMouse Site Monitor - Checks your company site or personal website every one, 5, 15, 30 or 60 minutes and alerts you in case of problems.
Main features:
- Checks your website from 17 monitoring stations worldwide in case of an error.
- Automatically warns you if encounters 2 to 5 concecutive errors.
- Pauses when your own computer is not connected to the Internet.
- Shows the hourly availability of your website over the last 72 hours.
System requirements:
- Macintosh computer with G3, G4 or G5 processor
- Internet connection (either dial-up or any broadband: cable, DSL, etc.).