Look for the applications marked with a dot on your dock, right-click or Ctrl-click their icons, and select “Quit.” However, if your Mac appears to be running slowly, you may wnt to close some of these applications. Even clicking the red “X” button on an application window won’t close it - it’ll remain running in the background. Mac OS X likes to leave applications running in the dock.

Try the “Disk” section, too - a process using the disk heavily could also be causing your Mac to slow down.

You can also click over to the Memory section - a process using a large amount of memory could cause your Mac to slow down. If this isn’t working, click the “View” menu and select “All Processes” to see all the processes running on your Mac. You can always try to close a resource-hungry app in the normal way first. Be sure you aren’t quitting a process that’s doing something important. To force-quit a process, select it by clicking it and click the X button on the toolbar. In some cases, there may be a single runaway application using 99% CPU that you’ll want to end. To launch it, press Command+Space to open Spotlight search, type Activity Monitor, and press Enter.Ĭlick the “% CPU” heading to sort by CPU usage and see the running applications and processes using the most CPU. Use the Activity Monitor - sort of like the Task Manager on Windows - to view your running processes and find ones devouring too many resources.

RELATED: How to Force Quit Applications on Your Mac When They're Not Responding Some “cleaning” programs - like the Mac version of CCleaner - can remove temporary files and free up space, but they won’t make your Mac perform faster. Stay away from programs that promise to “optimize” your Mac and make it run faster. As with a Windows PC, there are many reasons a Mac might be slow. If your Mac seems to be running slower than it should, the variety of tips here should help you identify and fix the problem.

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