Peek-a-Boo is no longer being supported.

Peek-a-Boo 2.9.3

Peek-a-Boo is the most intuitive way to explore what’s happening in the universe of processes on your Mac. It is a Mac OS X utility to monitor and manipulate all running processes. You can watch how much CPU time each process uses, adjust processes’ priorities, and monitor process information; the innovative process throb window shows in an instant the activity of all the processes on your system.

Peek Under the Hood

There are many ways to peek under the hood of Mac OS X with Peek-a-Boo; you can choose between watching overall system behavior in a variety of windows, or zoom in to scrutinize individual process behavior. (A full description of what’s new in each version of Peek-a-Boo is always on our version history page.)

overall system behavior

These views focus on broader overall system behavior, taking all processes into account.

the innovative process throb window

the traditional process list window

the cumulative system information window

isolated process information

These views allow you to isolate an individual process, and focus on that specific process’s characteristics.

observe with process information windows

track with logging windows

monitor with cpu usage history windows

To learn more about Peek-a-Boo, you can explore more: