When you see Activity Monitor icon, press Enter key. Press Command+Space key, and type “Activity Monitor” without quotes in the Spotlight Search. How to Launch Task Manager (Activity Monitor) on Mac There are many ways to locate and launch “Activity Monitor” on Mac. Yes, Task Manager is preinstalled on Mac OS X just like Windows, but this tool is known as “Activity Monitor” on OS X. If an app is consuming more resources, you can close or find an alternative to keep your system performance smooth. Task manager shows how much RAM and other resources are being used by the system, this statistics can help you decide whether you need to upgrade your system, or it has enough resources to perform well. It lets users monitor how a system is performing. Task Manager is very important tool that every Operating System must have. Some of the new Mac users may even think Task Manager is not available on Mac, but this is not the case. One of the well known concerned is locating Task Manager app on Mac. When a user switch from Windows to Mac, he/she face many difficulties at the start.