System Lens Lets You View CPU Usage With a Click

摘要

Whenever the fans in my MacBook Pro suddenly rev up, I use the built-in Activity Monitor app (Applications →Utilities) to see what's going on. But I've often wished for a quicker and easier way to check my Mac's activity-something like System Lens. This free app resides in the menu bar. When you click its icon, you see a snapshot of which apps are actively using your computer's resources.