Mac OS X: atMonitor is a free system monitoring tool that gives you highly detailed, real-time information about your Mac, running processes, and just about any system information you could want to know about. More »

Read more: http://feeds.gawker.com/~r/gizmodo/full/~3/7tR0rK9OGwU/atmonitor-is-a-comprehensive-free-system-monitoring-tool