iStat Menus

iStat Menus screenshots

Monitor the performance of your system directly from your Menu Bar.
Monitoring CPU Usage
iStat Menus 6.0 : Monitoring CPU Usage

Alternative downloads

iStatistica Sensors
4.0
FREE
iStatistica Sensors Plug-in enables temperature and fan speeds monitoring.
Memory Usage Getter
2.6
Program which graphically shows the memory.
Launch! Usage Meter 5
FREE
Launch! Usage Meter displays usage statistics on the BigPond broadband network.