# Launch multiple instances of Slicer in Mac

**URL:** <https://discourse.slicer.org/t/launch-multiple-instances-of-slicer-in-mac/29630>\
**Category:** Support\
**Created:** [May 24, 2023, 1:42pm UTC](https://discourse.slicer.org/t/launch-multiple-instances-of-slicer-in-mac/29630 "2023-05-24T13:42:12Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [May 24, 2023, 1:42pm UTC](https://discourse.slicer.org/t/launch-multiple-instances-of-slicer-in-mac/29630/1 "2023-05-24T13:42:12Z")

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Is there a way to launch multiple Slicer application in Mac? I can do that in windows and linux just fine by clicking the icon, but in mac that simply changes the focus to main Slicer window. CMD, option or other key combinations doesn’t seem to have an effect either.

Launching from command terminal is possible, but if possible I would like to do it through the UI.

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**Author:** ![pieper](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/pieper/32/8_2.png) [@pieper](https://discourse.slicer.org/u/pieper)\
**Post date:** [May 24, 2023, 1:45pm UTC](https://discourse.slicer.org/t/launch-multiple-instances-of-slicer-in-mac/29630/2 "2023-05-24T13:45:57Z")

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I always use the terminal to do this. But probably you could write a small program that would launch slicer and put the icon on your desktop.

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**Author:** ![hherhold](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/hherhold/32/12199_2.png) [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Post date:** [May 24, 2023, 1:46pm UTC](https://discourse.slicer.org/t/launch-multiple-instances-of-slicer-in-mac/29630/3 "2023-05-24T13:46:36Z")

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I’ve wondered about this too, and always wound up running multiple instanced from the command line. I wonder if you could use Automator to do this as a clickable icon (like @pieper suggested).

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**Author:** ![muratmaga](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/muratmaga/32/3622_2.png) [@muratmaga](https://discourse.slicer.org/u/muratmaga)\
**Post date:** [May 24, 2023, 1:47pm UTC](https://discourse.slicer.org/t/launch-multiple-instances-of-slicer-in-mac/29630/4 "2023-05-24T13:47:12Z")

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I’m fine with the terminal window, it was an inquiry mostly for other people.

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**Author:** ![hherhold](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.slicer.org/hherhold/32/12199_2.png) [@hherhold](https://discourse.slicer.org/u/hherhold)\
**Post date:** [May 24, 2023, 1:51pm UTC](https://discourse.slicer.org/t/launch-multiple-instances-of-slicer-in-mac/29630/5 "2023-05-24T13:51:29Z")

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I just wrote a quick shell script (`runSlicerScript`) containing:

```auto
#!/bin/zsh
/Applications/Slicer.app/Contents/MacOS/Slicer

```

Run a quick `chmod +x runSlicerScript` and you can double click it from the finder to run Slicer.