I sometimes like to have Activity Monitor running in the dock (to see CPU usage chart in the icon at a glance).

I didn't use it for some time though, but with a new mac I bought (El Capitan) I thought I'd activate it again.

Now I can have it start automatically but I always have to minimize the Activity Monitor window after login.

I think in the past6 I had set it with that option (to autostart at login via right-click on the dock icon) so that it started minimized but I can't seem to remember how.

Am I remembering wrong or missing an option?


Does this not work?

First right-click on Activity Monitor and go Options > Open at Login.

Next, open System Preferences > Users & Groups > Login Items and tick Hide.

  • Yay. That sounds like what I was missing (I thought I knew there was an option somewhere, but was looking inside Activity Monitor). I'll try tomorrow and am sure it will work (will give you correct answer then). – Anachronism Oct 5 '16 at 22:54
  • Correct. This must get a reward for the best hidden option of all times. – Anachronism Oct 6 '16 at 8:13
  • (macOS 10.13) For this the main answer to work you have to make sure you quit any manually started Activity Monitors before you logout otherwise the session saving will cause the window to appear when you next log in. An alternative is to simply hide the Activity Monitor window (e.g. via ⌘H) before you log out/shutdown and let the session save that state. – Anon Jan 24 '19 at 12:07

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