miniStat2

 This little system monitoring widget allows you to watch the status of almost every piece of hardware in your Mac. If miniStat2 detects that something went wrong it could notify you about it via Growl messaging.

 It has the summary view that shows up to six system stats of you choice on the main screen, and also it could show you more details about them on these dedicated pages:

• Processor: CPU usage, system uptime and the list of most active applications
• Memory: Active, wired, inactive and free memory alongside with size of the swap file 
• Storage: Amount of free storage space on all of your hard-drives and media
• Sensors: Processor temperatures on both cores, fan speed and other sensors (if available)
• Network: Network bandwidth and usage, Bluetooth and AirPort status
• Battery: Charge capacity, life cycles and remaining time 

Customizations

 There are more than 25+ different skins that will help you make it look a lot like your own Mac or another favorite gadget.

Controls

 You can control the widget using mouse by clicking the little replicas of Mac OS X controls inside of it, or by using following keyboard shortcuts:

 Pressing keys from 1 to 6 activates particular details page, Esc brings back summary view, Spacebar lets you switch between two separate settings layouts that are customizable via preferences. Pressing L button locks current detail view, so the next time you bring up the Dashboard it will stay on the same screen you left it. If you hit P key, miniStat2 will open the list of the most active applications.

 Something handy will also happen if you press either of C, M, D, S, N or B while looking at the summary view, but we will let you try and find it by yourself if you’re interested.

 In the Network section there are also several active zones waiting for click—you may switch on and off both Bluetooth and AirPort connections, and check your Mac’s internal and external IP address by clicking the little black IP button.